The character's special talent is electricity. Back in the day she was certain her special talent was heroics. Given the lack of situations where she could prove her heroicness and thereby get her heroing cutie mark, she decided to make a heroing problem and threaten the entire town with a death ray.
There's definitely an important story to tell, especially with the scientist pony fiercely destroying the machinery. At least the gloves remind me of something that Dr. Frankenstein might have worn, and I can't decided whether or not that strange device to the left is something malevolent or just a thing. (Pretty cool looking thing either way.) You did a great job portraying her anger and determination, plus the ferocity of her wrecking leaving her banged around and mussed up a bit, or if that didn't happen before she got to this place. Her pose and eyes also seem to show that she's a bit exhausted too but just can't give up until she's stopped whatever it is.