Hi. Me again. Who knows what's going on inside a WAS head? Perhaps they just want time alone to sort things out. At least be glad that she is still home and just need the occasional day or two at her friend's house.
When my trouble began, W insisted that we file papers immediately. That simmered down to "I'll stay and we can work things out but just give me some space and a little bit of time to myself". For now she is home but situation is similar to yours. She needs a day or two for herself.
Expect them to change their mind at the very last minute or to not honor certain agreements as in my case. W says "I'm going out early - 6 or 7pm instead of normally 9 or 10pm and I'll be back early". By early I assumed 12 or 1am but noooo, She comes waltzing in at 2am as usual insisting that it's her day to go out and that she's taking advantage of the time.
So just be patient, go with the flow, roll with the punches, etc.
Good luck and hang in there.
Me: 40 W: 39 D12 D9 D6 ILYBNILWY: 06/15/07 "We can work things out": 06/21/07 Currently: Still together, DB'ing every day