Originally posted by Nibedicus
Physics really isn't too precise in fiction. Nor does it need to be. It looks like they were portaying her bracing against the ledge and keeping it up with both hands. The shot might not be clear but as soon as she lets go, we can clearly see her right hand come up, not down. If she had been grabbing onto something or had it hooked, it would have fallen to her side. I don't think they were too concerned about forum goers breaking down the "feat" for its accuracy.The shot itself is misleading as her constant glancing over her shoulder makes it look like she's holding onto something but the part where she lets go seems to clearly prove otherwise.
Well, if she was using both hands (which I can't disprove), she has boots worthy of Spiderman. 😄