Baby ball python stopped eating?

My ball python is probably around 7 or 8 months old. She got big enough to feed small rats, so about a month ago I fed her one. She hasn't eaten since, and she should have eaten about 2 weeks ago. We already had one other snake that had a respiratory infection and didn't eat for at least 3 months (he's probably about 2 years old, full grown). My snake lives in a cage with 6 other snakes and the temperatures are at the right heat, and all other are eating just fine. My snake looks very healthy, she has pretty colors, a nice white belly and is very strong. I'm not sure if she's just not hungry (if that's possible?) or if there could be something wrong. I really don't think she's sick, but if she possibly is I want to get her moved into another cage so the other babies don't get sick.