I appreciate the responses. I have and will continue to toss her balls to get her to make contact out front. I've taped her and she sees what the problems are...I'd like to think that she understands it intellectually, and can discern the difference when watching slow motion professional/advanced players.
Any suggestion, visual, drill....so far, she goes right back to the extreme twisting (closed racquet face) Tell her to keep arms/wrists neutral straight, and it doesn't register. I understand that some pronation on the take back/swing to contact is normal, but hers is extreme for a 2HBH.
Is it so ingrained in her..."muscle memory." that breaking out of it will be too difficult?