Yes, I think he was rising from the seated shower position (5:30:30) when she plunged the knife into his heart, and I also think he did try to knock her over (her infamous 'football lunge') after that stab, I think that's when the ceiling pic (5:31:14) took place. Also think he was on his hands and knees and said he couldn't feel his legs but instead of her ninja story of kneeling by him asking what she could do to help she was behind him stabbing him in the back. I don't think the pic with her pant leg (5:32:16) is her dragging him down the hallway, it's too early for that yet, I think she's still attacking him in that pic.
I agree the ceiling pic took place when he rushed her. He was finally able to grab the knife (result is the deep wound between his thumb and forefinger) and get to his feet and push his way out of the shower. They ended up at the sink and she gets control of the knife back and this is where she begins slashing and stabbing at his upper right shoulder blade, the result is the shallow stab wounds and the scratches. After that they struggle, maybe they fall, he gets up and tries to run out of the bathroom, he falls, either from weakness or from pain as she stabs him in the back and he ends up on his hands and knees. This is where she slashes his throat and finally he loses consciousness.
To me that last photo of her pant leg is after he's already dead, maybe dragging him or repositioning him. But it's definitely possible the murder was still happening there. I just think it was after because I think she slashed his throat while he was on his hands and knees.