My idea when drawing her, and why she's naked is that her body is so hot that any clothing she wears just burns off.
i think a really cool backstory for her would be that she was this really snobby fashion model or whatever and ever since she got her powers she's been cursed to not wear any clothing, although she can cover up by conjuring flames in certain areas she wants covered.
she'd make a good villain in my opinion.
i kinda like to imagine seeing her cause trouble in fashion shows, burning off clothing the models are wearing, but the ones she doesn't like.
she's not ashamed of her nudity and encourages it to others that it's a beautiful thing but in a cultish way