Deadlifts. Also, I would get her a light bar. Rogue has a 15 pounder that would be very useful.
http://www.roguefitness.com/rogue-5k...-technique-bar
Rip is not a fan of kids training and I am largely in agreement with him. However, if you daughter wants to lift, there is no reason she should not. Load her very conservatively and if she continues to enjoy the lifting, great. You may need some technique plates/light bumpers to get proper spacing off the floor for deads. A full chin up is a good goal, too.