Kanim really likes Tony; he looks at her rather like she fell out of the sky into his lap and he's trying to figure out how she could possibly have happened. He really really likes her. He does not want to marry her. This is made extremely clear when Queen Marianne asks how he would feel about being Tony's backup husband possibility in case Bella cannot solve the technical issue, to which question his response is to bolt from the room at top speed shouting "I AM GOING TO GO HELP BELLA WITH THAT SPELL NOW."
(This is, he feels the need to explain to Tony later, no slight against her undoubtedly stellar qualities as a potential spouse. Which he wants Bella to enjoy. Which he will not be partaking of himself even though it is, evidently, not a law of nature that only one person can marry a given other person. Because he does not want to be any sort of royalty and be asked for things even if his only duty would be to impregnate another sort of royalty. He is not even sure he wants non-royal children.)
Bella works on the spell, and Kanim helps. It's mid-Pink when Bella finds her beloved Sherlock and says:
"I think this version will work, even if it would be premature to test it before Umber. Which throws into rather stark relief the fact that if I cast it, eventually we will have a baby princess on our hands, and we have not actually discussed parenting."
"So there's that. Um." Bella scratches her head. "I'm not thinking of any other obvious decision-making that can be made in advance but I'm concerned that this is me overlooking things that are in fact decisions as though options that aren't what I'd go with were not options at all."
"I think maybe some people put their babies to sleep in the room with them even if this isn't forced by space constraints in the house?" she offers. "And that seems - well, for one thing, right now we have three rooms between us, so how not giving Carinna her own room to start with would work is not obvious."
"I mean - the more of them there are the less pressure is on any individual one to like politics, get married, produce children of their own," says Bella. "You two were having issues with the husband quest thing, after all. But of course there are also reasons not to have half a dozen even if that would still only involve going through childbirth twice apiece."
"People do routinely go through the process more than once on a volunteer basis," agrees Bella. "Okay. So probably three. Their own rooms near enough Sherlock to be heard. Standard princessly tutoring, no unusual dietary arrangements, what am I forgetting - there should probably be some consistent reaction from us if they misbehave, I guess, so they don't just go to whoever the softy is." She glances at Tony. She bets Tony would be the softy.
"No, of course not. But, general principles. I wasn't a defiant kid, but I wasn't perfectly behaved either. Ranata usually took away privileges, Charlie usually sat me down in disappointed silence and grounded me," she supplies. "...I think I'm pretty much just against spanking across the board."