Ya this has been out for a while. It's honestly not something to get too excited about either. Jija has some mad skills; she's insanely flexible with some really sharp kicks, but the choreo is pretty bland "beatdown-style" Thai mainstay with very limited back or forth. It's nothing you haven't seen Tony Jaa do, only he does it better. Only recommended if you're fan of tough-chick movies or like Thai cinema in particular.
Over this, I would check out Born To Fight (a remake of the Thai action classic Gerd Ma Lui), which you can get from Dragon Dynasty, and keep an eye out for Ong Bak 2, which is supposedly the **** and a half.