I have found it difficult to talk to my sister for many years.
About 20 years ago, my sister had an affair with her oldest daughter’s husband. My sister had been living with them at the time. My niece kicked her out, and she went to live with the one daughter who "took her side".
It destroyed her oldest daughter. They ended up divorced.
Her three other daughters were split on whose "side" they would take. One chose the mom, another one chose her side, and one wanted to remain "neutral" (which in my mind was favoring her mom).
Then over the years, my sister made a mess of her relationship with two more of her four daughters. She lived with each of the other three daughters over the years following the affair. Oddly enough, in BOTH cases of alienation, her daughters’ husbands are the ones who kicked her out. She hasn’t had her own place to live since 1983.
At this point, she has one daughter who associates with her, and now she lives with my father.
Yes, there is a mooching aspect to her, no doubt.
Christmas used to consist of all of us getting together as a huge family.
Not anymore. Daughter #1, the betrayed. has her new husband and family. #2 stays home about 400 miles away (neutral party). #3 lives nearby, and she has Christmas at her house "in support", but her husband hates my sister and the day is strained, to say the least. #4 lives 70 miles away, and make sure Christmas is distant and with her kids only.
The affair destroyed that family. It caused me to be alienated from all of them, because I could not tolerate anyone "accepting" any of what my sister said, which was a huge lie and destroyed my niece’s first husband emotionally. While he was the wayward husband, the things my sister said of him were devastating, untrue, and he has retreated from most friends and his own family.
I empathize with you.
I am still angry about this, so I get how you feel.
Affairs suck.