Ha! Reminds me a bit of that episode of Buffy the Vampire Slayer where she uses a bazooka on that monster who was supposed to be immune to all weapons! All well and good until you can't keep up with the times, eh?
Dang, I love the angry eyes in the first panel. Good layout. Your combat dynamics are getting better and better. Lots of flow and good movement. Looking forward to the finishing move, if she can pull it off. And yes, that is a smug smile, the kind you just wanna punch.