Frankly, she is probably pulling the trigger too slow. IMO pulling/squeezing slow and being surprised by the break is old school. I would suggest she dry fire wit fairly rapid trigger squeezes and focus on where the completion point is in the trigger pull. When you know that, you can add timing your sights crossing the bullseye at the completion or sear break point.
A long slow squeeze will make any trigger feel bad.
Quick take up, settle sights on aimpoint and theN a smooth increasing pull with break timed as sights cross the bullseye will be better everytime. It will also make most triggers feel good enough.