You can feed her small rats. I have two snakes that are currently on live mice. They both used to eat rats but some for reason they will only take mice for me now. You can try with the f/t rat again, you may just have to wait until she is hungry enough for her to accept it. You should only offer her food once every 5 to 7 days or you could stress her out and she may not want to eat for you. How many times have you tried to get her to take the f/t rat? You could try a freshly killed rat and see if she will take that for you and then transition her onto the f/t. My snakes are growing just fine with eating adult mice. I just have to feed multiple mice to satisfy them. I'm sure someone with more experience then myself will help answer your questions as well.