Dear Amy: My brother and his wife are divorcing. My brother has been abusive and an alcoholic throughout the marriage. I have always sided with my sister-in-law. I have cared for my niece and nephew over the years, as well. Now my brother is committed to rehab and doing very well. I am now a support system to my brother because he is putting in the daily work to recover and to stay sober. However, now my sister-in-law will not speak to me, and my niece and nephew will not answer my texts.