Thanks, SM, for checking in. Things seem to be going better (not good, but better). The 180s and GAL stuff are becoming habits, so my mood is much better. I still slip up once a day or so by treading toward R topics; a couple of nice, calm conversations have resulted and seem to have made her more positive, but this doesn't justify the slip ups. She definitely notices the changes in me and is happy to see it for my sake.
There's a long way to go yet, but I'm seeing a tiny glimmer of hope for the first time in a very, very long time. I'll write more when I'm not working