We finally received the DVD of The Legend of Hell's Gate. As mentioned by director Tanner Beard previously, the bonus features include deleted scenes of Summer Glau, as well as a picture in the photo gallery.
Here's a video gathering the deleted Summer Glau scenes and a sample of the HQ screencaps we made.
It's a shame we didn't get to see the first deleted scene in the movie itself; but as Fermi said, Summer's charcater is not essential to the storyline. There's a disproportion between her weight in the movie and the advertising of the movie where Summer's name is very often put forward.