"Yep. Unpleasant things are only unpleasant to a certain point. I get sleepy, but I will never pass out from exhaustion or lose too much coherency. I can get stabbed, but not very deeply and I'll heal pretty quickly. I can get hungry, but never starve - you get the idea. It's pretty convenient. I have no way of testing to see if it extends to the Simurgh's song, and will never do that because that is in the running for the worst idea of all time."
This is not how she tested it, but you could conceivably test it like that.
"Yeah. And they combine well if I'm crazy enough to use myself as a battering ram. Which I am."
"Though, to be fair, I don't do it casually. I'd much prefer to not be a battering ram at all. Just, when you're up against an Endbringer..." She shrugs. "Something something anything to kill it."
"Yeah. I mean, that's my whole—justification, here. If they break physics I might need to be a bit more notorious than I'd been expecting, though."
"... I think you might be undervaluing how much you could do as support to other capes."
"Maybe so, but I'm pretty sure if any power has a shot at actually killing those monsters it's mine. Probably Scion's, too, but him we can't really talk to."
"What, you don't think mine has a shot at killing those monsters?" she wonders lightly.
"It might, if you're as indestructible as you say, which, I'll need to see to believe, really. I mean, it's not unheard of, the Siberian's probably also on the list, but."
"Fair enough. And yeah, the Siberian's probably also on the list, but good luck convincing her to fight an Endbringer."
Sigh. "...maybe you could throw her at an Endbringer instead of serving as a human missile yourself."
"Yep. Very inconvenient, wish she were on our side. But nooo, she had to be the inconvenient kind of crazy."
Snort. "If I see an opportunity I'll try it, but just as a guess, I don't think my personality or arguments could redeem her. Bit too far gone."
"Yep. I think I'd rather just kill the entire Slaughterhouse Nine if an opportunity presents itself over trying to convince her to fight for the good guys."
"...are you sure? Like, convincing her to fight for the good guys might entail eliminating the Endbringers."