Sounds like defensive strikes. How long have you had her in that enclosure? I just picked up a yearling that the breeder (a pet store) had on mice, so she isn't very big for her age, half the size of my ratter of the same age. This snake is a demon psycho. I've fed her live mice but dangle a F/T rat with forceps and she just hits it repeatedly.
I feel bad for her, she's obviously never been handled or acclimated to people correctly. As soon as I have some live crawler rats I'm going to work on getting her switched over, shes got a pretty good feeding response but I got her to breed and she will never get to size on mice, and I'm not breeding mice anyway.
Back to your snake, leave her be for a solid week. Let her settle in. Then give it another shot.