That is awesome! She will love it.
I will also use a small word of caution when getting her started. To cock the cricket you must pull the hammer or pin staight back. A lot of little ones want to slide their thumb under it just like we would if our hands were that small. When they fire it will pinch their little thumb. AS long as you watch it you will be fine, I just wanted to give a heads up on it. If you look close in that 2nd picture you can see what I am talking about.
I only know this because my little girl got one for her 3rd birthday in March this year and she LOVES it. She has shot over 2 brick of ammo out of it so far. I cut her stock down and dremelled the part under the cocking device down so she can slide her thumb under it without it pinching her.
It is awesome to see people passing this stuff on!
Here are a couple of pictures when she first got it before we cut it down. She was shooting at turtles! Obviously shooting like we are in the pictures I have to help but, off of a bench and rest she handles it pretty well. I wish I had some pictures off the bench but, my wife did not think of it until we were headed back to the house!