I just saw an article on MoviePilot.com that had me thinking. So I had to go back to the DVR recording of the episode and watch again and here is what I stumbled on. In Episode 11 Season 4 "Claimed" you have Michonne and Carl go for a supply run. While in a house Michonne is looking at paintings hanging on the wall that look like they were painted by a child. A sunflower, a tomato or peach looking fruit , and a dog playing. There are others like a bunny and such but those stood and I will explain in a bit.
She is then handed a painting that was wrapped in paper. When she unwrapped the painting there was a girl who had had one eye (the other eye was X'ed out of the painting), scattered with blood dripping on her face and had her red hair braided on one side. Later she stumbles on a girls room that has a sign on the outside the door that reads shhh they are sleeping. On the inside of the room there is a family all propped on the bed and chairs like a little girl would do if she was playing with dolls and on the wall mentions Mae Maes room.