yes, give yourself a break and get to al-anon meetings (or whatever works to keep the focus on you instead of her).
My AH is 2 months sober. I am taking each day one day at a time, trying to wrap my head around the realization that relapse is forever in my future. It is my understanding that if we accept that the alcoholic is always an alcoholic, even in recovery, and relapse is always a possibility, we can begin to enjoy the sobriety instead of being focused on what may or may not happen.
Maybe try to enjoy and celebrate your wife each day she remains sober, and don't focus so much on "what might be's".