Shell's memories are going to be perfectly accessible, but they will not come up automatically in response to stimuli unless the resulting Shell Bell is expressly open to it. They will keep Shell's hard-earned tolerance to pain, insofar as that's separable (Shell is quite sure that she'd be able to make a pentagon if another situation as important as getting ahold of Sherlock to mint Juliet came up). All of Shell's insights about Sherlock's importance stay. Her itchy discomfort with Sherlock not getting her importance will be folded into Bell's resignation to same. The merged Shell Bell will be comfortable referring to either past in the first or third person, but will default to using "I" for Bell and "she" for Shell. She'll torch, but that's the only supernatural property Shell's bringing to the merger; she'll retain all Bell's magic. Shell looks a little older, but not much; they'll go with that, as they think torching probably conflicts with actually aging and they don't think twenty is the ideal place to sit forever and whatever Shell is supposed to be is closer. They are omitting the nightmares, good riddance.
"Last minute questions, comments, reasons to expect this to be a bad idea in some way?" Bell asks.
Shell shakes her head. She is looking forward to not being a separate person anymore.
It is not a job for a star.
There are two evils left, from when Sherlock made evils.
She frowns, and rereads all the wish parameters from where she wrote them down for Shell to look at, and finally she touches one of the remaining, declawed evils and wishes.
There were two.
Now there is one.
Shell Bell teleports up to the Belltower.
She writes the story.
If Sherlock or Tony choose to observe her at this activity, they will see more of Shell than of Bell in her, because it's Shell's story and she's got Shell's memories open to share it. But the differences aren't so pronounced. It's quite possible that Shell-alone could have recovered much of her sanity simply by decluttering her apartment and living in it uneventfully for some months or years. Progress was made in the days she spent back home before the merge, and the merge itself helped between the magical excisions and the deemphasis of the worse memories.
The differences aren't pronounced, but they're there. Shell looks up when she hears unexpected noises and Bell doesn't. Shell's hands don't tremble after the merge, but sometimes, her lower lip does, where Bell is often still. Shell orients herself around Sherlock like Sherlock is the sun and Bell falls into more natural, less obsessive patterns.
And now that they're one and the same, it's all about -
"- Ah, I just completely forgot about holding the door for the Joker when I saw you," Shell Bell says ruefully. "I was going to just see if the door would go there, but now I guess I'll have to actually hold it and brainphone him that I'm back and let him out."
She pulls open the door. It's Atlantis. She closes the door, closes her eyes, focuses -
"...Well, there's a thought, but while I'd welcome being a vampire again and miss Kerron quite a bit and have no strong objections to resuming being stuck exclusively on you, I don't think Nathan's going to want to share an identity with a version of him who -" Airquotes! - "'cheated on you'."
[Hullo, Shell Bell, I think he'd be torn to pieces over the fact that I've spent the last century comfortably enough, unmatebonded, enjoying myself with miscellaneous ladies of Downside instead of remaining loyal to his mate in spite of the fact that he'd see red if he knew I'd touched his mate.]
[If I don't think about it, it's Atlantis, but I concentrated and I opened the door to my Downside apartment without too much trouble. You'll be able to visit friends of yours here through Milliways. And the place isn't going to be like it is, anyway, me and the other Bells are going to destroy that sadistic ruinous setup.]
"I did my merge with an evil. I haven't torched since, but I did mean to keep all of my magic as it was, and the coin went. If you give me a star to try, and an evil if that doesn't work, I can do it for you. Although maybe I should consult with Golden first, as long as we're going to your world."
Shell Bell kisses Sherlock's cheek and steps through the door to Aurum. "Hi, Elspeth, we haven't met, I'm Shell Bell. There's a glitch in resurrection-with-evils called Downside. I need to talk to your mom, and the Joker and this extra Nathan need to talk to the Nathan here."
"You know," says Timer, "I held out hope that you'd just think I was a garden variety alt till somebody could explain, but I suppose arriving arm-in-arm with the Joker without him even singing soprano first torched that interpretation."
"Who in the name of Maughold's left asscheek are you supposed to be?"
"Call me Timer," says Timer.
"He's right there, Nate," says Timer, "technically dead or not he's there - the more pressing issue is what we're going to -"
"I'm trying not to think about you," snaps Nathan. "If you - if you -"
"Yes, yes, you're afraid that I've been unfaithful, and also afraid that we got up to something while he was Downside, the only outcome you'd consider acceptable would be if I'd spent the last century celibate, how do you feel about making like Shell Bell and importing some of my more even-keeled notions? Sell it for me, babe, he's not gonna listen to me," Timer adds to the Joker when he sees the answering look on Nathan's face.
"Sweetie," says the Joker. "I love you. He's you, so I love him too. I don't wanna lose either of you, and I don't wanna make trouble between you the way it would if I hung around with both of you all the time. Shell and Bell got sewn up and they're just fine. If you're okay with it, and it works so you don't hate yourself afterward or anything, then I want you to."
"Gonna have to figure out how to square away my memories so my de-vampired Downside memories don't get completely lost against high-def surround-sound smell-o-vision," says Timer, waving a hand. "Maybe get us recall independent of vampirism like the other mint Bells have got."
"Do you want to remember being human here? Again?" asks Nathan skeptically.
"I don't see why not. We're going to fix the jealousy thing both directions, aren't we, we won't torture ourselves over - what was her name -"
"Calybrid."
"Yes, her, it won't matter, the Joker certainly doesn't mind her."
"...She's not in the -"
"I never looked her up," shrugs Timer.
"But I wasn't thinking so much of Calybrid."
"...Mmm. Okay, the kids could be a problem."
"You could put it - away, like I did with Shell's less pleasant memories," says Shell Bell. "Of which there are terribly many. They're all accessible if I want them. They don't intrude if I don't expressly invite them, and they're muted, a little, at a sort of emotional remove."
"...All right," says Nathan. "What else?"
"We want to torch," says Timer. "I haven't done it, but it'd be better than dying again, according to Eights it doesn't even feel like anything by itself."
"...All right."
"Oh, and as long as we're talking about editing the mate bond, let's not edit the part where you don't care what nether bits the Joker's got at any given time, he finds that inconvenient - don't look at me like that, I might not be all magically infatuated anymore but that leaves marks, he shows up and presto-changeo and snuggles up to me, what am I supposed to do?"
"God, I don't even know. All right," says Nathan.
"Torturer's control has to go, and so does the power the judges have to hand it out like party favors," Shell Bell says promptly. "Some reasonable ground rules need to happen. We need a system to repatriate people to where they belong if they want to go back to their worlds or other worlds and will behave like people and not like - like Downsiders sometimes start behaving, torturers or not. We need to empty the catacombs so people aren't in limbo until some miserable self-righteous shit of a judge gets around them. We're probably going to get attention from upstairs - we need to check out Upside too, maybe it's bad in its own ways - and we need to be ready for that, we need supplies of stars and evils, we might want to see if there's another level above that if we can talk any of our respective helpers into trying, we need several of us on the ground and one or two hanging back in Milliways ready to bail us out if she's too much to handle. If she is, we need a way to just funnel people out manually and process them somewhere other than her turf. It would be good if we had a system of interworld travel that was under our own actual control, though, so we should experiment with that, see if it's something we can do with coins."
She slides up at a rate of five thousand per second, watchful for signs that she should speed up to shorten the trial, or slow down to make the slope gentler.
He has also started making small sounds and pressing his face briefly into Nathan's shoulder now and again.
The next coin after the one million mark is indeed something new: three equally spaced prongs, each with one point aimed outward and two more hooked back toward the middle, so it has nine points all in all. It looks positively vicious.
The Joker doesn't—quite—looks like he wants to stop.
"I have no clever naming ideas," Golden says. "You can hang onto all of the nine-pointed ones until we have a complete expedition put together and can discuss strategy, by which time more may have been accumulated, from the Joker's alts perhaps. I will take a few of the evils." She does.
And takes a deep breath, and lets it out, and takes another.
"Yeah," he says, slow and soft. "I'm fine, sweetie."
And he lets go and sits up a little to toss a smile at Shell Bell.
"Anytime," he says flippantly.
"I was assigned to Chainsaw. I don't think, by reputation, he'd have been inclined to keep me as a pet for - I haven't counted it up exactly and I didn't have enough access to timepieces to know for sure even if I did count days, but I'm pretty sure it was on the order of twenty-five years. Undoubtedly it would have been horrible, but I still had most of my memories after the first time Voice tortured me, even the second and third and fourth, it took a long time for me to get as wrecked as I did. I wouldn't have thought of it as being better. But it might've been."
"That reminds me," says Shell Bell, making eye contact with Golden. "I think you probably understand this more than any of the others do - but you need Edward and it's not just because of the mate bond. I'm sure turning hurt more than anything Voice did to me. I only had a human body to feel it with. But I was all by myself except for Voice. It made a difference."
It doesn't take long for him to come up with enough hexes to get his regeneration back up to pre-mortem levels, and then he adds flavour-tuning on top of that. Giving Nathan a nice tummyache seems like the perfect way to finish up.