My little guy has done this a few times, but for the most part only shortly after he came home. I agree, it looks really scary, but mine seems not to have hurt himself either. He has stopped this as far as I can tell now that he is settled into his enclosure. How long have you had yours? It is possible that she is just trying to map out her new surroundings, and once she gets comfortable she will not be so inclined to "climb the walls", both literally and metaphorically. I believe this behavior is called "wandering" and is common with new arrivals, though if she has been in that enclosure for a while and still does it you may want to check over your husbandry and ensure that everything is correct, as it can also be a sign of discomfort or something wrong in the tank. I have also read though that babies, because they are not yet very heavy bodied, do tend to push thier limits a bit with the climbing. Once they start to really put on some weight they seem to give up on this idea.