[quote=@Gisk]
Interesting power, just curious, does she have the ability to raise her internal temperature at will? Or does she need some kind of tool or special clothing to do that?
[/quote]

She does it at will, it is a transformation type quirk if we are to go by the My Hero classifications. The core of her body will heat up and her insides actually glow blue as she increases in heat. The obvious downside of this being that she can cook herself internally if she is not careful.