Right, I'm not the best at confo critiques, but I'll give it a go. She looks to be standing under herself in front, and sickle hocked behind, making her look a bit like a circus elephant stood on a podium (but not as dramatic
). I like her shoulder, it has a pretty nice slope to it, so she should cover ground well, and the angle looks good (to my less than expert eye). Her neck is a little course, and her throatlatch thick, meaning she may struggle a little with flexion at the poll. Her back is nice and short, and I like her pasterns.
As for the video, I really don't think it showcases her very well. She is not being pushed in her gaits, she is just slopping along, I don't think she's even tracking up in the trot. I won't comment on the jumping as I don't jump, but it looked like the rider was getting left behind a lot, and she hesitated before the jump several times, maybe for fear of getting bopped in the mouth.
I'd definitely try her out and see how you click. If I were you, I would be pushing her a lot more in the flat work than she appears to be at the moment.