Can you kick her out now? Make her see what it will be like to live with the OM full time?
I see no point in continuing to have her around the house, and you have to do a big 180 now, because what you have been doing is obviously not working and you're running low on time.
Your use of the words "love bank" tell me that you've read Harley's stuff. He calls it Plan B. Michele calls it the "after the last resort" technique. Whatever you call it -- it's time to try, don't you think?
The LORD is near to all who call on him, to all who call on him in truth." (Psalm 145:18)