Late to the game-2

[Free]

Update. I need some help here.
I told W I am done with her and asked her to file. We briefly discussed officially telling our kids that our M is over. We agreed that we need to tell them together, but not on how to tell them.
Since BD, every R conversation ends the same way. W ends the conversation by saying she is tired and that we will talk tomorrow. She did it again during our talk about telling the kids. There is never a talk the next day as she avoids it by any means necessary.
Now, this is where I need help. W had been sleeping on the couch for weeks. After that conversation (3 days ago), I went to bed. At 3am, W comes into our bed. I politely asked her to leave and she said "No. I want to sleep here tonight".
That was 3 nights ago and she has come to bed every night since.
Last night, I again asked her to leave. Same answer, only angrier.
I can't force her out as I know it could escalate. I do not want to leave my bed either.
She still has no idea that I know about OM. It sickens me to be near her and being in the same bed is even worse.
Another thing. For the first time since BD, W made me dinner last night.
If she wants out so bad, wtf is she thinking?