This is the main character, Elizabeth.  Her supernatural weapon-thingy is called FreeFall, named after the Evanescence song "Weight of the World," a line being "I won't be held down by who I used to be, she's nothing to me!"  FreeFall is a strange gauntlet and metal shoes with razorsharp cleats.  The gauntlet was slightly inspired by the Witchblade anime.  Enjoy ^^