Except that when she leaves the bathroom, she's not in the hallway. She's in what appears to be a large, brightly lit bar. None of these things apply to her hallway. She feels rather out of place; t-shirt, pajama pants and stuffed unicorn are not exactly magic bar attire. (She thinks.)
As far as Jenny knows, there's only one person in her immediate vicinity who associates with magic. This doesn't seem like Soph's style, but it also doesn't seem particularly threatening. From Soph's explanations, evil magic is pretty up front about being evil. "I replaced your hallway with a restaurant" does not scream evil to her, it's just weird.
She ventures inside a few steps. "Soph? Soooooph, is this you?"
"Er. Yes?" Jenny looks at herself. Ratty pajamas, worn stuffed animal, seriously intense bedhead. "Are there immortals that look this goofy, really?" Then she processes implications and takes a nervous step backwards. "Does this mean you are a vampire, not a human? I have a crucifix! I'll use it!"
"...I'm a fairy. And I've looked that goofy plenty." And then, deciding that if someone didn't want an ungulate wandering around their weird...tables...area...they shouldn't have replaced a stable with it and not warned anyone, she opens the door and leads her unicorn inside.
Trivial concerns like "my hallway was turned into an interdimensional bar occupied by an immortal fairy" are summarily ignored in favor of the actual real life unicorn. "Oh my gosh, she's so pretty!" Jenny sizes up the unicorn. Years of managing eager siblings around potentially unfriendly pets manage to somehow overcome her enthusiasm and actually enforce safety habits. "Can I pet her...? Is that okay?"
Jenny moves gingerly towards the unicorn, almost afraid the unicorn will vanish when she touches it. But no vanishing occurs. "Soooo soft," she hums happily. "Yes, you're a good girl, aren't you, Penguin? Such a pretty girl." Then to the woman with a laugh, she adds, "...why Penguin?"
"I get it!" she says instead. "How old is she? Where did you find her? Can anyone find a unicorn? What other markings are there? She's so prettyyyy."
"She's ten years old. When Mother decided I was responsible enough for my own mount, I chose a calving mother and started training the foal when she gave birth. Just to be attached to me, at first, of course. I don't think there are any unicorns in the mortal realm, sorry."
Jenny keeps petting Penguin, looking rather awestruck, but her brain is starting to catch up to her and think of things in addition to (never instead of) the unicorn. "Waaait, does that mean I'm not in the 'mortal realm' or whatever now? Where are we, anyway?" She pinches her arm experimentally. "Well, probably not dreaming. Weeeeird."
"I haven't ever been to ours but it's supposed to be pretty hot! At least within my country, I guess. Swamps? Mosquitos? Palm trees and alligators?" Pet, pet. "Er, these are all stereotypes. See: I have not ever actually been. But not with the icy and snowy." Pet pet pet. "Sometimes it snows, like, an inch, and everything shuts down because OMG SNOW and they can't handle it, aaaaand I'm babbling, I'll stop now." She keeps petting, then pauses consideringly. "...can Penguin walk on ice? Or, wait, you stay enclosed away from the snow. Sooo that's dumb, probably not."
"Awww," Jenny goes to pat the stranger's shoulder, "don't look so stressed, unicorn lady, it's okay! There's still penguins, I promise! Many extremely magic things have happened, but as far as I know none of them affected the weather? The penguins are just reeeeally far away. Where there is totally ice and snow and stuff."
She ceases petting Penguin long enough to hold up Fancy. "Fancy, this is Penguin. Penguin, this is Fancy. He belongs to my little sister but he was totally mine first, so his name is sorta my fault, buuut whatever it's fine."
"I mean, my world doesn't have unicorns, makes sense that some things are different. Well... I don't think it does? If Soph has been holding out on me, I will be very annoyed, who reveals vampires and demons and not unicorns?" She shrugs. "Sorry for the confusion. My continent's pretty far north, actually. If we had a map I'd show you, but. Nope!"
She peers at the globe, impressed. It's a large step above the glitter Soph threw at her. "Neat!" She pokes at it curiously, and ooohs when her fingers goes through. Then she looks somewhat despairingly at the North American blob and sticks her finger into what she thinks might be approximately southern California. "Here? Ish. I'm somewhere in there, anyway!"
"That... sounds like a pretty good way to describe my world, yeah," Jenny laughs. She tucks Fancy back under her arm and goes back to petting Penguin's neck as she looks around the room again. "Seriously, there's no one else here? Do you think someone's spying or something, I'm getting sorta freaked."
"Most of the magic I know about is evil," Jenny points out. "So far this has been harmless and had unicorns, sooooo I don't have a lot of options left. Unless I'm dreaming or something. Yep, God's the one with the angels," she laughs a bit at that, she guesses it's not well known for fairies but it seems so obvious to her, "why?"