So if I am explaining it to her can I say "hips then hands"?
I think that cue is fine, and use it myself with a lot of my girls that want to have everything moving forward at the same time. Currently, in her load/stride, she is moving her hands back with her leg kick, and then letting them come forward as she strides. A good way to explain it to her is that her hands should be at their apex (furthest point back) when her stride foot lands. My daughter is having trouble with this as well, but we're getting there.