I went through a similar thing although her room didn't change but part way in I suddenly decided I always needed to be closer to the door than her to feel safe. Luckily I was able to tell her this and she was always careful to make sure I was. It lasted for over a year before I could change and I have body psychotherapy which means we sometimes move round in the session. Poor woman but she could see that I got really anxious so now she just asks me where I want her to be and if she moves without asking even now I notice she never goes between me and the door.
I hope you are able to talk about it and that she is able to move things round for you. I can so understand the anxiety and I had to talk about it and work through it for ages, but it did improve so hang on in there.