your sitch is similar to mine. Don't know what to expect when I come through the door - usually minor chit chat, maybe dinner, maybe not. Then after dinner she goes to bedroom to read. Gives me all evening with kids.
You have to detach. All that means is you still have PMA, you are still friendly, but you've unhitched your wagon from her roller coaster. The sticks she pokes at you don't work anymore.