I did not totally understand the event. So she struck at you or she looked like she was going to?
Also, how long have you had the snake? Acclimation is usually a week or two.
It could be a number of things, including just being an aggressive snake.
I am guessing that you feed this girl in her enclosure? I know what people have been saying about feeding in the enclosure, and yes, maybe it does not put as much stress on the snake, but I value a tame snake. Maybe it is time to feed in a separate enclosure. (Again, assuming you feed in the same enclosure).