Opening out of her tuck early is exactly her problem. She has done it correctly and can, but she's been doing it incorrectly for so long that it takes a bit of extra effort to do it right and she's a bit reluctant to change it. I will try telling her to stay round. Thanks!Without seeing it, it can be hard to say exactly why she has an issue standing up correctly. One possibility is that she is opening out of her tuck too early. If she starts to open her chest (think arching- but it doesn't have to be that extreme- even just a flat back position counts as opening) and pull out of the roll early, then it will be difficult to stand up. Some of my gymnasts had an issue with this. I told them to think about staying round or ball-like until they were securely on their feet and then stand up.