I'm starting to wonder if moving out sooner rather than later would allow me to cope and detach more. I know, everyone says don't move out. I'm just thinking that (1) if I don't see her every day, it's going to be less painful, and (2) may let reality set in for her more.
I think there are a lot of good reasons for you staying in the house;but I've been through that and I know how tough it is to live with someone that's maybe already kind of checked out of the M. That's why I had told you before if you can make it to February (the date you were discussing) that would be plenty long enough!
What does your L say about how moving into an apt. will affect your custody/financials? I would probably try to follow her advice if possible. If she says it's not good for you if you wind up in D court, then I wouldn't do it. If she says it doesn't matter, you should probably take at least a few days to consider/think about it. I wouldn't go out and sign a lease unless you're certain.