Something I don't get.
The first time Greta met Brahms the doll, she was shocked and didn't really care for it after the old couple left. She covered it with the blanket and started to talk on the phone with her friend.
Then later on she seemed to do a complete 360 and all of a sudden starting to really care for the doll like it was a real little kid. Making him dinner, putting him to bed, and carrying him around in her arms. And even when the weird stuff started to happen with the doll moving around by itself I was expecting her to get the hell out of the house as fast as possible. No matter how desperate she needed the money.