My experience was similar though not exactly the same.
Look at some of my earlier posts / discussions.
My last meeting was March 2009 but my wife kept going.
But she attended her last meeting in July 2009.
Long story short - for me it got unbearable and I confronted my wife about TTATT. A deeply emotional moment, most stress our marriage had ever been under. She was shocked, fearful, but also agreed on some points.
Then in July 2009 the elders took her aside asking if I was apostate. That was the nail in the coffin for Mrs Scotsman - she never went back.
Its difficult with no easy answers but as I think you have already discovered - you cannot keep living in a dream world - things need to change.
I thought my wife would never leave, never understand - but she did.
good luck...