Sounds like she wants OUT, & that should be telling you something. A 2' snake could probably use a larger cage, for one thing, but I'm MORE concerned about her
EXACT temperatures & HOW accurate they are (where are you taking them & with what?). BPs are usually low-key, so for her to desperately push on the screen suggests
that she is uncomfortable, & most likely TOO HOT...as a cold snake gets less active & tends to hide. So fix this A.S.A.P. for her health & safety. We aren't seeing her
cage or details...I hope I'm wrong, but fear I'm right. Snakes also NEED TWO hides...one cool side of cage & one warm side of cage, FYI. A previous escape will also
tend to make a snake more likely to try to escape, as they DO learn their way around (or in this case, how to get out), but it still suggests that her home is not to her
liking (ie. comfort).