I'm sure, that she's cosplaying as a mecha or Pokemon with drills as hands. But what's its name?
Could that qualify as "Badass Adorable"?

I think that the "drills for hands" motif is common enough that it can't really be narrowed down into a "cosplay" of anything specific. It's just a generic kind of playing around, like how people will put a paper towel roll over their forearm and pretend they have an arm cannon.