Woke up today in a relatively positive mood. Anticipated another bout of arguing while getting ready for work, but it went smoothly this morning. While I was in the shower, W said from the doorway that she was truly sorry for our D2 having contact with OM. This came out of nowhere and I wasn't having any kind of conversation with her. Seems like she genuinely feels bad and maybe thought about it before falling asleep.
I also indicated that I would like to sleep in the MBR at least once this weekend and that we should discuss this going forward. She agreed to have a night on the couch. Call it progress.