She definitely didn't quite look right in the Averngers. Much better looking in Iron Man 2.
She's a sideshow, she's not worth a stand alone flick. She's an ancilliary supporting character in pretty much all the flicks... she's no Hulk, Thor, Iron Man, Cap America... Etc etc.
She's just a chick that shoots some fucking pistols and knows Jiu Jitsu. Woo. STFU and go get Thor his coffee, bitch.