Words I might keep on standby if she brought the bedroom topic up: "I was wrong to say you must sleep in this room. I'll sleep here, and I enjoy sleeping next to you, but it's your choice where you sleep." A clear 180 on your controlling behavior setting her free--which in fact she always was--that would be undermined if you repeatedly apologized, plead for an outcome, or called attention to the change.
Hopefully a veteran with more EA experience will chime in before you cross this bridge, and you'll have more time to read other situations to see how they handled this common dilemma.
