Just so we're clear.
https://drive.google.com/file/d/1RgExrxq--J7a8O07RnbzLHD9eXXJ13bW/view?usp=sharing
Left hand pic show the way the thing works on our adjustable bed.
Right hand pic shows a model getting in/out of the bed.
Mrs A can scarcely swing her legs, certainly not bend them.
So the area at the FOOT of the bed has nothing for her to grab onto. The device helps a lot, as she has some strength in her arm/arms (although not much).
Would your suggestions work for this?
A.