Overall she is looking OK, she does have a good base and if she progresses through the rest like that she should be fine.
I saw a few things to address but the biggest one I saw was not being "quick to". It might be just the way I happen to watch the video I always pause the video as quickly as I can numerous times to see various positions and one frame I happened to pause on had her elbow slotted, hands well behind hips and elbow and dropped parallel to ground and bat head already down parallel too.
And my final comment which is a pet peeve of mine but just seems like there is not anything to be done girls hitting balls off the tee fastest than you can put them up. You even hear the instructor say slow down, I think I am going to start making girls either count to three or four out loud or maybe give ques like "feet set, knees bent, nice V, ready" before they swing.
Keep up the good work