Just chiming in to say that i am now in this EXACT same situation as you are Gordie... We are neither here nor there and trying to live together as friends/roommates is a HUGE challenge and i am not sure if i have the emotional stamina to keep this going just yet.
I wish i had some advice for you but i do not, or else i'd take it myself lol
How often have i wondered, if only she KNEW what i was thinking, but trying to reason with her and explain things (which i was always great at actually) is really the worst thing you can do. SOMETIMES, when she has a VERY lucid moment, it seems like some of the things i am saying get through to her. Do they stick though? I don't think so...
Hang in there, time will tell either way i suppose!