vise Can I ask where this inspiration to take back the bedroom came from? Just curious. I know we do things at times because we want to get a reaction from the W and that's normally the wrong way to do it. I know when I did basically the same thing as you did it went pretty horrible at first and was done wrong on my part.
She obviously feels entitled to the bedroom and your still in the phase where she's going to be disrespectful toward you because of the WW mindset. You do need to stand up for yourself and take back some of the control over you but be very careful how you do it. Don't do it in a punishing way or let the conversation turn into a full blown argument by being reactive. You have to be in control of yourself in these situations to limit what you contribute to them becoming worse. There will be conflict but you do have an effect on how much.
Remember, your not taking back the bedroom to force her into a worse sleeping conditions, to prove a point to her, or to punish her for wanting to separate. Your setting a boundary that you will sleep in your own bed in your home. Boundaries are difficult and hard to do so try to have a solid plan worked out before doing them. This is about you and the treatment you will accept not about her or trying to control/wake her up.
Accept what is, let go of what was, and have faith in what will be