My ex has a whole closet and dresser with vanity full of clothes along with other personal items. The stuff still being here months after she left can give an impression that they might come back. But she sure doesnt act like it. She's been here many times and not really tkaen much more than what she left with.
So I'm at a loss of what to do with her stuff. To be honest I'm afraid that if I tell her she needs to get her stuff out of here now, I will somehow be ensuring that she doesnt come back. I know that probably isnt true...it wont affect things either way.
At the same time walking by the furniture, seeing her clothes every time I get mine out, is a painful reminder of her and what happened.
Aside from changing the locks, the hardest think I've had to do was go around the house and take down all the family photos of us/her. Now, as you said in oyur sitch, there are holes on the walls where those were.
So I dont know how to advise you, but I have an idea of what you're going through.