Thanks, BG. The study is nominally "mine" as my PC is in there. We had a talk last night and I explained that Mondays are my "taking care of me" day, so I'll need some time and space to myself, and she was OK with that.

This is largely my stuff, I think. It's not that my partner doesn't understand or is opposed to me having my own space (though she can get a bit clingy sometimes). It's more that I need to give myself permission to take care of my own needs, especially when I'm physically in others' presence.