As long as she has a good back-up bat, one she's very comfortable with, then I agree with Core. As long as there's no cracking, and the end cap is still seated firmly, you've probably got quite a bit of life left in the bat. The problem is, when they do finally break, its never at a very opportune time. Last thing you want to be doing during bracket play on Sunday is driving all over whatever city you happen to be playing in, looking to pay full retail for a replacement (if you're lucky enough to find one).