Still on hiatus until tomorrow, buuut Sayaka will be running around above ground like a complete idiot. She'd probably be able to semi-ignore the respiratory problems and stuff thanks to her healing, but I imagine it would still affect her to some extent, especially over long periods.

At some point she might be dragged back underground/forced to retreat temporarily but chances are she'll sneak back out again eventually, lmao. She can't do jack against the planes, so she'll just do her batshit crazy berserker routine on a couple of the Masked because that's what smart people do.