If you decide to sleep in your bed (and I certainly hope you do), and she says "What are you doing?" or "I don't want you here," (or something similar), say "I understand you feel that way, but I decided that I'm most comfortable in my own bed, and there's no reason why I shouldn't sleep here. You're perfectly welcome to stay, and I hope you do, but if you don't want to, I understand that too."