When my mom's dementia got to the point that she couldn’t live alone anymore, my sister and her husband took my mom in. I helped her by taking my mom for 3 day weekends 2x a month. After 3 months my sister called and asked me to move my mom to my home because it was causing problems in her marriage. We moved her to my home (husband and 6yo and 11yo kids). She can’t be left alone so I had to cut my hours at work and now spend most of my time with her. When we moved her in, my sister promised to reciprocate the every other weekend visits so my family can have a break and some privacy. 2 months ago sister sent me an email saying she can’t help with the visits anymore and I haven’t heard from her since. I have emailed and texted her with no response. I’m left to assume that she no longer cares to have a relationship with my mother or my family and I can understand the desire not to help as I wish I didn’t have to either. BUT I am struggling with acceptance and forgiveness in this situation, my husband and best friend are both angry with my sister for her behavior, I am too mostly because she has stopped communicating with me. I can’t do anything about the situation with her and am in need of advice on letting it go. She has made her choice and I could always make the choice to put mom in a home. Why is it so hard to let go?