Congrats to your daughter for giving it a go and you for getting her set up! If you ever get down here to Phoenix, look me up and we'll go out to Ben Avery to shoot at 1000. I may make you both use sling and irons with a .308 though : -)
See if you can get a copy of Nancy Tompkins' book on prone shooting. Lots of good info there.
Will have to do that, wife has family in Phoenix.