I'd also recommend the 200 XTP- it performs very well at lower velocities. One of the other members has taken a couple deer & javelina with the 200 XTP and I believe 65 grains of powder. You probably can start with 60 - 70 grains of powder, let your daughter shoot it first. If she's comfortable with it, you could bump it up to 80 grains, or just leave it at 70 if that's what she's okay with.

My friend's daughter has also taken several deer with a 240 grain XTP and 70 grains of powder. For 50 yards & under, 70 grains should be plenty.