Bella is hanging out in a Jarvis - the familiar one - handwriting a nonaggression proposal-slash-bribe. Has to be handwritten. Damn fussy demons. At least it's okay for her to conjure rather than personally harvesting the weird ink she's supposed to use.
"...Following the lady too far forward gets me Showering Dude. I'm going to skip backwards, see if I can catch the changeover..."
"...Bath Lady can glow and turn into Shower Dude. Apparently what they're wearing is tracked separately. I don't really know what to make of that."
"Well, look, if they were in the crystal ball they'll be important but that doesn't mean they have anything to do with me - why don't you pastwatch me -"
"Nothing if I look for you a month ago," she reports. "No results, like if I was looking for the Tooth Fairy."
She does.
"Here she is with us in Canada, there she is in my bedroom with the bunkbeds, there she is sorting through her tacky jewelry -"
"And here she is looking in the fridge but apparently not finding anything she likes, and here she is reading a school copy of The Great Gatsby, and - thirty seconds before that there's no her, no bunkbeds, no tacky jewelry, no Great Gatsby. Looks like she popped into existence with all her stuff an hour and fifteen minutes ago."
"No - no before that I was on the phone with Barb and before that I was - what did I - before that I was doing my math, and before that you picked me up from school and complained about me not being able to teleport without spending a coin every time and I said you could just give me more coins and you said maybe if Jane weren't down - and - and before that I was in school, I got peanut butter on my shirt but Carrie loaned me this one -"
"An hour and fifteen minutes ago the room was how I remember it. But let's see if I can track backwards from when you appear and see what made you."
"Our parents made me! You brought a sample of me to that party where Jane was doing gene sequencing and I'm your sister!"
The view shifts, dizzyingly, and she's "followed Soph" to something that doesn't look like Soph at all.
"That glowy green-ness you saw in your crystal ball," says Bella. "There's a lot of that, and there's monks around it, casting something. I'm gonna skip back to the beginning of the ritual and pentagon the language they're casting in..."
Soph is shivering, in spite of the fixed temperature, and looks desperately at Sherlock.
And then the spell ends, and the glowy green light winks out, and the monks clutch each other in relief.
And then she goes on watching the monks in case any of them are going to conveniently explain what just happened to each other.
"Bath Lady has some serious strength and she killed everybody who cast the spell a couple minutes after they were done," reports Bella.
"That's going to make it difficult to question them about it," Sherlock observes.
"Yes. Another reason to be upset Jane's down, I guess we didn't have enough." Bella nibbles her lip. "- I know you're conveniently immune to all kinds of things," she says to Soph, "so you're not a mint and you've never been to Alethia, but what did you get in your fake memories when I presumably checked out your counterfactual daemon and coin color?"