Welcome to BP.net!! You are in the right place for answers. Here's the Ball Python Caresheet if you haven't seen it yet. It'll help you a lot.
You said "live fuzzies". Live fuzzy what? Rats or mice? There's a big difference. Depending on your BP's size and age, fuzzy rats might be just right for her. A BP should eat about 10-15% of its body weight per feeding. The easiest way to know this is to have a kitchen scale that measures in grams and weigh your BP. Then weigh the fuzzies. A 500gm BP should eat a 50gm rodent (or 2 rodents that equal 50gm more or less).
So pictures would be great! And a little more detailed information about your baby will also be helpful! Ask away with anything you need!