This story has gotten to the ugly stage, and I think she's not going to work out for you, or anyone. Do you have wounds, or was it 'pressure', not punctures? If wounds, get them treated. If pressure, the next episode will likely be worse. It's not about 'night fears' or whatever, it's about her response to you over her concerns. And owning your bed? Wow!
This 'rescue' group placed a dog who shouldn't have been sent out in the first place, very likely, and/ or they have no idea how to evaluate temperament, or just don't care.
Every dog can't move into a normal family situation! Some need to be managed by experts, and those experts have enough to do, and can't take on every 'difficult' individual.
I hope you can get help where you live, and that things work out the best for you and your family.
Mary