The lighting and perspective on this are really well-done! It gives her an imposing, towering appearance, and it looks like the air itself is starting to heat up from all the fire she's tossing around. Her expression is a good mix between sad and determined, and I also like the way you've got her clothes flowing around her, and just the few subtle liberties you've taken with her appearance in general, like the nail-claws on her feet and her horns being a bit more pronounced. The only thing that strikes me as noticeably odd is that she kind of looks like she's wearing red mascara. It doesn't look particularly wrong or bad, just maybe out of place or even only unexpected, given the cooler tones of her outfit when it's not surrounded by monster-fire.

She looks confused because of her crooked eyebrows and her slight frown. She's also, to me at least, rather repulsing. I'm not surprised everyone leaves her, TBH.

She doesn't seem to be attacking anything but just letting balls of flame fall harmlessly to the ground.

As for how well it was drawn, above average. Not to bad, maybe this isn't exactly front page art, but who knows? It diidnt jump out or inspire me, hell, it didn't even capture what the story portrayed it to be.

2.5/10