You don't need to feed her more often, but offer her more mice in a sitting. Once you get rats, make sure they are the right size. Underfeeding is one of the biggest problems I see with n00bz. I recommend feeding a meal that is about as big around as the fattest part of her body or roughly 10-15% of her body weight (ie. 1,000g snake should be fed 100-150g of rats every 7 days).