To get down into the weeds a bit ... what I try to do when I get up is, "How would I act around a neutral housemate?" I try to be positive, considerate, but try not to let my mind wander into, "How is she doing?" "What is she going to do today," Etc. Let my housemate live her life.
And for the weekend, I just try to schedule it the way I want to, to meet my needs/wants (which includes wanting to do stuff with my kids!!!) And coordinate w/ her on the schedule. I actually just scheduled several possible activities for the weekend w/ some mutual friends, and when she became aware, she asked if she can join the group on one of the activities. I said yes. (Actually, I slipped and said something even more welcoming. Bad house elf!)
I write this to share & get your feedback. I'm good w/ 2x4's, 4x4's, claw-hammers, mallets....
Me: 50, MLC/WW 45 Young kids Nov 2015: BD1 Apr 2016: BD2 Jan 2017: W filed Feb 2017: D final