There’s no way to know one way or another whether her editing “saved” it. There’s no other original edit without her, so it’s an unfalsifiable claim.

I was just responding to the poster claiming it was some sort of feminist conspiracy theory to claim that she was an editor on the film and did a good job. She did edit the film, and a plurality of her peers thought the editing was a good enough job to award the most prestigious award in the industry for the work.