I picked up an M&P22 for my girls too, they are 10 and 13. The 10 year old didn't like the pistol and would rather shoot my Marlin XT17. She is deadly with it, 2" groups at 50'yards. My 13 year old really likes the 22 pistol and she's also good with it at 25 yards.
Truly great parenting, Dad! Your little girl will grow up with confidence in herself whether it is in the classroom or the board room or her personal relationships. No! I'm not suggesting that she'll be using a firearm inappropriately in any of these environments, just that she'll know that "a she is NOT less than a he". What you're teaching her is priceless!