40 mph in games is considered slow at 10u?She tops out at about 43mph, but she tends to slow down during real at bats, so more like 39 to 40 in game.
She is about 4 foot 9 and may weigh around 65lbs.
Thinking back, we went to travel ball second year of 12u. My daughter was clocked at tryouts at 41 mph. She played C ball that year. Fast forward to second year 18u now, she cruises at 59-61 mph in games. Granted she was/is a tall girl, but I would not give up at 10u.
Speed is great, but it is worthless at the older levels without location. Work on location. Then if the speed does come, she will be so much further ahead of the other girls.