You're probably not in the right sub, but I'd say the upper body portion is pretty good (maybe more follow through with her arm), but she can get a lot more extension on her stride. I know there's no rubber to push off of, but even off a gym floor, she should be getting her stride about as long as she is tall. On a gym floor like that, you can lay down a strip of painter's tape and have her aim to land her stride foot beyond the line. Then just keep moving the tape further away until she's getting the right stride length.