Four year old daughter is having trouble with her Waltz Jump...?

I should technically be able to help her because I learned the same thing when I was her age, but it came more easily to me than it's coming to her. I'm a jumper, she's a spinner. Anyway, so her coach and I have tried almost everything but she keeps flubbing the landing. Her half flip and bunny hop are just fine, but after a half rotation, she falls on her back. Any suggestions?