@mzza111 You may not believe in crates, but your rescue does. She probably feels more secure in your bathroom,especially since you say she spent 3 months kenneled
at the vets. I think if you got her a crate,where she could go to feel secure and have her own "space", she would give up the bathroom. Once she gets used
to her new surroundings and family, she may use the crate less. You just leave the crate door open for her to come and go when she wants to. I too had a rescue who was 2 when I got him. He had never had toys, and didn't know how to play. It took several months before he learned that he could play with them.