Thanks for the tips.

I think we are gonna go with a anchor bolt /bracket into the ceiling 2x4s with a chain / grab bar set up.
that way it will be out of moms way when she makes the bed.

They have a adjustable bed, so after seeing how the ones fit between the mattresses , those aren't going to work very well for their set up.

I asked if the hot tub step would work since they don't use the hut tub anymore... but dad says it is too big & heavy . I made it very sturdy for safety. They were only using a 8x8 block of wood as a step and it wasn't very sturdy at all.