For me (and others) feed a small small rat (40-50grams) 1x per week. This is all a Ball Python needs (except for the very biggest girls). This size is not much bigger than an adult mouse. If you are feeding 5 adult mice each week you are pry giving her close to 100 grams of food. Again not wrong but more than she needs, especially if she is still a little girl.
Hope this helps.