For fastpitch mitts I've had the best luck with All-Star and Vinci. They last forever but really tough for a 10 year old to break in. I have a All-Star CMW3000 and it's a great mitt. If she's staying in 10U and using a 11" ball I'd take a look at the CMW4000 mitt. I broke the 4000 in for a 12 yo MS catcher and it's a high quality mitt and nowhere near as tough to break in as my 3000 model.