I am so sorry to read about the communications. Your xw has rewritten history and, of course, blood is thicker than water, when it comes to what her family will believe.
As for your girls reaching out to their mother, it is up to them. They are grown and they can make their own decisions and it's good that you have pointed this out. Your xw is a grown woman who is stuck and is afraid of what the girls would say to her. She needs to put her big girl panties on and reach out to them one more time. Unfortunately, the girls may never reach out to her.
You can do what you want, but I wouldn't have any more conversations w/any of that side of the family unless their conversations sound like they are rational and ready to hear the truth.
God bless you for having the patience to deal w/them.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.
