I get your name totally after seeing her! Because she has long legs, she has a nice natural line but it's also more work for her flip them around! The FT looked great and she is very graceful.
Before I go into any possible errors, I wanted to make a point about her frustration at not making progress. ..The thing you and she have to remember regarding not making progress over the last few meets is that when all you have left to correct is little things, fixing them isn't going to give you nearly as much bang for your buck per thing fixed as a bigger correction...and if you are trying to focus on fixing all your little errors it's a lot more to remember than focusing a few big things. Imagine trying to do all that tumbling while also remembering to point your toes, keep your legs together, straighten your knees, etc all at the same time. Also try to imagine remembering ten corrections - you'd have trouble remembering them if you were sitting in a chair, let alone in the middle of a tough routine. So given that all her mistakes are little tenthed to death type stuff, it would be very hard to make a dent on it in three comps.
What helps is repetition of troublesome short section of the routine - or even just a single skill if she can't perform it perfectly on its own - focusing on one or two corrections at a time...until she can do that correction perfectly in her sleep. Then move onto the next correction in that skill or section of routine and then the next correction until she can do that entire skill or section of routine perfectly in her sleep. Then move onto the next troublesome skill or section, always focusing on one correction or maybe two, but also circle back to the practice the skills or sections mastered and once you've mastered a few skills or sections, also begin stringing them together and if that causes errors to reappear, then work that section one correction at a time until mastered, etc. Once you've mastered all your little bits of routine then you move onto somewhat bigger chunks of the routine but always focus on one or two things to fix.
This is consistent with a theory of gaining mastery called deliberate practice. Many studies have shown this type of approach is the best way to develop expertise. It also explains why few people become true experts - it gets boring to do the same thing over and over, trying to correct one small aspect of it, rather than doing something more fun - eg, the serious tennis player hitting hundreds of cross court forehands to improve their footwork compared to the causal player who only wants to play games (the fun part) and would be miserable hitting the same shot 1000x. We hear on here all the time that optionals and elites still do drills to improve their RO, their BH, and probably many other skills that a level 4 is already bored of.
Okay so all that being said (lol)...The things I see in terms of possible errors are lack of amplitude on jumps, some leg separations (on the BER and the BH), some bent knees/lack of toe point here and there. I'm not sure if this is a deduction but her FH looked a little slow (kind of like a FWO)...I couldnt tell if she got flight. She might get more rebound with more distinct flight. Again I'm not positive but in her back tumbling pass it seemed like the BH and BT went a little crooked. Hope this was helpful!