Well I forget who coined it here but unacceptable behavior IS unacceptable behavior. Chances are good Someday is a codependent and was molded to be an excellent foil to a using A. She will accept unacceptable behavior bc she places herself lower on the valuation scale. She thinks she can save this guy. Notice she asks what do I do now? She's not done despite a lack of trust.
The best advice I can give you Someday is work on you. Have you read Codependent No More yet? Keep up the healthy diet, the yoga, and read that book!