that's a really good start, I like where you're going with this!
Here my picky notes:
- on the up, there could be a more refined timing approach so that you have her a bit slower going up at the very beginning until around x31 and then she uses her legs to push off and the timing of the up movement gets faster.
- on the down I would slow down the beginning as well, then ramp up the speed and then either get faster until the touches the chair (not a hard plump, but pushing the contact more than what you have now), or you have her go down and then slow down around x80 for a few frames, like a little pause, and then have her drop her butt onto the chair (but here as well you should have a harder contact moment)
- her hands on the thighs feel more constrained on it than actually using the arm for a push off or stabilizing. I don't buy the weight of the arms onto the legs
- watch out for her right arm at x39 how it is overstretching
- her wrists suddenly rotate after x39 to 42 and then stop (her right arm is still overstretched at that point); I would give that turn a more natural feeling; right now it feels like a computer rotation without purpose
- overall the body rotates down and up in one axis and it would be cool to have more sideways rotation, like she's leaning a bit; that will help you with the little step she takes after x47; that step feels to isolated in the leg section, with no root or hip movement for balance and weight shift
- her right foot slides back at the beginning and that slide is a bit simplified, so in your next pass you could add a little Y rotation to it as well and maybe TINY side to side tilt
- watch out for the unnatural movement in her right wrist after x65 until x72; the arm bends and the wrist turns back, which is a weird move
- her body and head feel too connected as one unit after x16 when she bends down to around x25; it would be good to break up those movements; same on the way up
- as you introduce a bit more side to side movement (translate and rotate) in the body, it will also affect her head in those directions for balance
Alrighty, hope that makes sense!