I moved things around to make it easier to detach. If I made decisions in the house that he might have objected to, then it was a way to detach and move on in my own head. I don't necessarily prefer the changes to my physical space in all cases, but I've maintained them as a reminder not to pretend he's on a business trip or something, and to affirm that I get to make these decisions for myself.
I haven't read the beginning of your sitch, but I doubt your W left because she was thinking YOU weren't happy enough. Expressing your contentedness might have been a form of appreciation, or she might have read it as you being unmotivated to make changes she felt were needed.
Something to consider.
Me42, H40 D12, S8, S7 A revealed: 7/13 Sep 4/14; Agreed to D 1/15