This is truly fascinating.
"What else do you know about the power? Does it vary at all with time or circumstance, does it interact with the other person's power...? Exactly how does it protect you if you're forced into some position humans typically can't occupy without injury, like if I tried that same wrist-break I used on that creep only I was also half-steamroller? Do you just fail to twist past that point, or do your various parts extend their tolerances as they go so you could in theory turn your head all the way around like an owl if you had the right machinery?"
...Bridget laughs. "You have a positively vicious imagination," she says. "I haven't tested that specifically, but if I had to guess, I'd say the first one. I have broken a few drill bits, stripped the teeth off a chainsaw, and now flattened a bullet."
"Would you mind awfully if I did try to break your wrist, to see for myself?"
Bella then gets up, takes hold of Bridget's hand, and attempts the throw. "Erm," she says, when Bridget just stands there. "Oh, right, usually your tendons would be screaming at you to get on the floor now - but the technique can work on people who can't feel it if you push a little harder, by sheer leverage. Cops use it on people too drugged to feel anything all the time." She follows through harder, Bridget goes down, and she leans on the wrist.
It does not go.
"That is really fascinating."
Bella lets her up, applauds politely, and says, "Is it hard to keep this under wraps?"
"Less so than you'd think," she says, getting to her feet. "I haven't been made like this in a long time. As long as I don't rely on it, which I don't, it's pretty easy to avoid demonstrating."
[Sucks to be Bridget,] is Alice's first response, because of course it is. [That's kinda awesome, though. Did you tell her about your brain?]
"Huh," says Bella. "Does anything hurt you? I mean, you said cold weather is uncomfortable - do you get hungry? Cramps around your time of the month? Migraines, gas, flashes of bright light, loud noises? Cayenne pepper?"
"I do get hungry, I don't get cramps or headaches, loud noises are annoying and no I have not tested whether I am susceptible to hearing damage, spicy things taste like spicy things but they don't really hurt."
[But what if she's really into pain and doesn't know it 'cause she can't get hurt? That would suck!] he insists.
"Hmm." Bella taps her chin. "What if you tweeze hairs out of your leg or something? Will they refuse to come out, or does it just not hurt when they do?"
It is kind of genuinely horrifying in a way that very few things are, until he remembers that Bella has magic pain powers, which makes it a little better, and then he remembers that he could have magic pain powers if he wanted to and could use them on himself, and then it's fine.
"I have not in fact tried that bizarrely specific test," she says. "I do shed hair sometimes in the normal way."
She hits Alice with a comforting medium-square amount of "tension headache" flavor, as a screwed up long-distance substitute for a pat on the head. [There there. You are very unlikely to wake up with her power.]
"Rats. Hm. What else hurts but doesn't really injure... I assume you can cut your nails, right? Or they'd be ridiculously long. What about the nail that's still right over the nail bed? For most people any direct contact with the skin under the fingernail will hurt." Pause. "Am I being creepy? I am concerned that I am being creepy."
"I am more entertained than creeped out by a long shot," says Bridget. "I will let you know if that changes. I used to chew my fingernails when I was a kid, post-miracle, and I never managed to hurt myself that way; does that adequately answer your question?"
"Pretty aggressively, but then, I don't know how much chewing is usually enough to hurt."
"Enough to get down to the pink. I encourage you to mess around with that if you care, but I'm going to file that under 'probably doesn't hurt'. Hmm. What if you sleep on a terrible bed for a week solid, or drink preposterous amounts of things like alcohol or coffee or other things that can kill you in quantity?"