The only way you can be sure of your bp's age is to ask the breeder, but that's not going to help you determine how much you should be feeding her. She should be fed according to her size and body condition. A pic would help. Include something in the pic to give us a sense of scale (e.g. a ruler, a quarter). This thread will show you how to post it: https://ball-pythons.net/forums/show...-Post-Pictures.