I've had something similar happen where after feeding an appropriately sized prey item (a rat in this case) she still zooms around her cage in the strike position looking for more. This was after a 5 month hunger strike so i gave her another smaller prey item.

But then i figured out what the problem was. I feed in the enclosure, so it wasnt that she was really hungry, it was that she SMELLED the rat. I cleaned her cage to get the rat smell out, and then she was back to normal.