I have two females from this year. One I hatched on May 20th and the other hatched on July 10th. I started my babies on large rat pinks or mouse hoppers, whichever they preferred.

Both of my girls are close to 200 grams now. They just moved from rat fuzzys to rat pups and/or small adult mice (depends on what I have that day). They get these down with no trouble and are quite happy. Even though my spider was a slow starter (she hatched in july and didn't eat until september) once she got started she had no trouble moving from hoppers to rat pups in about a month.

Ball pythons can take bigger prey than most people think. Since you've been feeding fuzzy mice, I'd go up to hoppers for the next feeding, then move up from there once you see that she can eat larger prey. I'd also think about feeding her every 5-6 days. Babies eat a LOT and grow quickly!