Long-term experimentation shows that, at least as long as she's not getting bloodily injured in regular fights with Los Angeles's demon population (and she can generally make it through unscathed, and now every supernatural creature in this hemisphere knows that the Slayer can set you on fire with her mind and some demons keel over with no visible injuries if she just looks at them), she can operate in fine and suitably Slayery condition while being nibbled on most days. It would probably not be a wise exercise for Sherlock to attempt to subsist solely on her, though, so the brick house does acquire a fridge and a microwave thanks to Sherlock's slightly stolen inheritance.
This afternoon, Bella is sitting in an armchair in the house that is Jarvis, reading about some neutral demon species and taking dutiful notes.
Minnie, who has inexplicably changed narrators, says, "I've been very well-behaved and you should definitely be glad you untrapped me. I haven't spied on anybody in the shower at all."
"Well, that's reassuring."
"I can go anywhere now! As fast as I like! I've been all over the world." She pauses. "Mostly invisibly. Most people wouldn't talk to me if I appeared to them, and one person tried to have me exorcised instead of just asking nicely for me to go."
"That's a pity."
"So I think I should hang out here more," Minnie says. "Since I like you and maybe I can convince your boyfriend to let me spy on him. It's okay if he lets me, isn't it?"
"That... would be between you and Sherlock, who is currently still asleep but will be up any minute," says Bella.
"This species of demon is believed to be neutral because at least five of them have married humans," says Bella. "I'm not sure, from the circuitous way this is written, if the humans were on board with all those weddings, so I'm not sure how I should feel about this sort of demon, but at least it is statistically more likely to try to marry me than dismember and stew me."
"I will certainly try to avoid marrying a Gvaribflerx." She makes a creditable attempt at pronunciation. "Met a Whistle, earlier," she says. "Found Milliways in my house, met the one with the Bell who hasn't been there herself yet. Sue, goes with Aegis. He wanted to walk around not-really-demon-hunting, we sparred in the back, he managed to give me a bloody nose so I figured I'd have a fine shot of returning him to his own Bell without him having been folded, spindled, or mutilated. Didn't find anything, though, and he woke up after a while."
"It didn't bleed all that much. By the time I got to Bar for tissues and peroxide it'd stopped. But yeah," she sighs tragically, "wasteful. Whatever, I've been completely fine on daily dessert duty for months now and I'm not even taking iron supplements, I don't think it'll make a difference. ...Possibly I should take iron supplements."
"I don't think he'd shoot you again, but he'd consider attempting to put you under arrest. He knows me well enough to know I wouldn't be buying iron supplements for nibbles I did not approve of, and he's not stupid, and he's - a dad. I think I'm under the age of consent for this state, and he doesn't know how far under same you are."
Minnie pops into visibility between the two of them, stunned. "Six?" she says. "Six?"
"Minnie," sighs Bella. "How old are you?"
"Seventeen," says Minnie at once.
"Nope. You're a hundred."
"I'm obviously n-" Minnie is brought up short. "Ohhhhhh."
Bella snickers. She's been getting in her fire-wand practices during the daytime, lately, so there is no need to waste valuable overlapping-awakeness-time on such things unless she happens to feel like that particular segue into - later activities. She puts her book aside and rolls up out of her chair. "Shall we?" she asks Sherlock.
She veers in its direction. [Jarvis, can you call my dad if I haven't contacted you to tell you not to by eleven, tell him I found something at Spencer and Third, and that you can contact me regardless of phone charge in an emergency and I might need the cavalry if we cannot handle this unidentified thing?]
And: [Giles, are you awake?]
[Demonic-lookin' thing on the prowl, me and Sherlock don't know what it is, it's about seven feet tall and completely white and smooth and basically humanoid but with giant hands and feet, moves pretty nimbly, trotting down the street like it doesn't care if anyone sees it, have you got a clue what it might be?]
[Haven't seen its face yet, but the way the rest of it looks I wouldn't be surprised if it was a case of lack thereof. Got - three fingers and a thumb on that hand - not grossly asymmetrical otherwise so probably the other matches but I didn't see - no claws, hands or feet either - four toes to a foot -] She's drawing nearer. [And it's paying no attention to me even though I'm gaining on it.]
[It might not be white. It could've been painted. You got anything that's like this and nonwhite?]
[Where is it going?] she wonders aloud to Sherlock.
She swings around its shoulders to try from another angle.
It grabs her off of it, hurls her to the ground, and steps on her in its unslowed quest for the school.
She doesn't move.
It is heavy. Heavy enough that without particularly trying to stomp, its step could leave a Slayer with all of Bella's manyfold blessings from her alt unconscious on the ground. Certainly too heavy to drag away. He can shift its hand or its foot, if he puts his back into it.