Ya know, many of us here have done just that. We've given the A just "one more chance" to prove that "this time will be different".
I realized just recently that it was that small ember of hope that kept me trying and holding on so long. But I've also come to realize that there is a difference in hoping that they'll change - versus - living on that hope. I choose to not live on that hope anymore.
So, you did what you always do and you gave her another chance.....and you got the same result.
Are you sick and tired of being sick and tired yet?