We have one like that. A little pastel het hypo female. She is just a peach, (not). I saw a video on world of ball pythons about aggressive hatchlings, it seemed to help. But she is still really moody, and you just really have to be on your toes if you have her out. There is no snuggling and watching tv with her. From what I have read some say they will mellow out, but it could just be her personality. She is kept in a rack, exact same way as all others, so who knows. Maybe someone peed in her rat cheerios. It sounds like your girl is still young, hopefully she will start to settle down.