I'm sorry for your sadness, dear, and I understand that sort of sadness.
When I kicked my AD out after a month's stay, I had suspicions of drinking going on, and knew for sure she was smoking pot because I walked into the smell that day when I got home.
What I didn't expect were the cases upon cases of empty beer bottles I found hidden in the closets when I went to clean her room up.
You deserve happiness, and having your home as a safe haven