As everyone else here said please get her on rats ASAP. She is most likely hungry. I have never seen an aggressive ball python. They can be defensive and they can be crazy hungry but not aggressive. Given the chance a ball will hide or "run" away. This may seem like a play on words if you have an animal that it is striking, but it is not. It is key to understanding the behavior of the animal. A good example of an "aggressive" snake is a cottenmouth. They will come at you rather that running away. Anyway, in my experience, if a ball is comfortable in its environment and it is not super hungry it is not going to strike.