I was just sitting in the living room when I heard a knock-knock-knock. Seems pretty normal, but it was clearly coming from the inside of my house. My mom just walks in or calls out, so I was kind of creeped out. I knew the door was locked.
I got up calling, "Hello?" When I got into the kitchen, I saw Tillie's light was on. When I opened the door she was standing up in the crib, waiting for me. I guess I do prefer knocking to crying!