Aww look at the little lurking snake! Sorry but I love that posture. I wouldn't worry hon, she's likely all excited about that yummy rat and wondering if another is going to wander by. Take it as a good sign she's interested and a good little hunter. Babies are snappy things but I'd rather one snappy and alert than curled up and not wanting to eat.

Right now she's just all about eating and growing is all. That's pretty normal really and not a bad thing if you think about it.