Anna felt Cas approach the way she'd felt everyone else approach. Well, it wasn't really everyone else, it was really just Dean and Robin. That was the extent of the people who trusted her not to kill them right now. And really, they didn't get much response out of her anyway. Pretty much all she did was take care of Aiden and sleep. Or some approximation of sleep. Now that the dreams were gone, she seemed to have insomnia (go figure). So she lay in bed and ignored the people coming and going (for the most part).
At the moment Anna was sprawled out on her stomach in bed. Aiden was laying to her left, the side of the bed she used to sleep on. Anna wasn't even holding him as she fed him, just holding the bottle up so that he could drink. She didn't have it in her to pull him close right now, and she didn't need to breastfeed at the moment. He did get that a few times a day, close contact with his mother while she fed him. Sometimes she even snuggled him just to snuggle him. But for the most part the life had gone out of her, she did things on autopilot. It felt like the whole world had gone grey, nothing had color for her anymore.
Lifting her head to the door, Anna debated for a minute whether or not to let him in. Although she could feel the determination as he stood there. She wasn't just going to brush him off. Better to get it over with. Anna turned the knob and let the door creak open a bit without leaving her spot on the bed, without stopping feeding Aiden. She didn't say anything, just let her head fall back to the pillow.