What sort of riding will your daughter be doing? Mountain bikes are okay but they are HEAVY, the knobby tires are not a good choice for riding on anything other than loose dirt and mud, and the front suspension is not needed, too heavy, and can't be adjusted.

The Trek Wasabi 24" would be a cool choice but it's singlespeed and your daughter is probably wanting some gears. Yes? No?

If you can afford it the Trek KDR 7.2FX is a much, much nicer bicycle. Lighter, faster, something none of the other kids will have, that's for sure. Able to handle all the trails and jumps any kid that age will likely want to do.

As andymac said, there are a number of similar bikes to compare. The Trek isn't bad and most kids don't care because they have nothing to compare to what they ride. The important thing is to get them outside and riding and burning off some energy so they come inside and eat their vegetables and go right to bed.