Bereavement Support Group
Are you grieving the loss of a loved one? Whether you lost someone recently or it's been years, grief and its accompanying emotions can be complicated to cope with. Join our online support group to connect with a supportive group of people who really know how you feel. Help is right here.
I do know one thing that I think will work for you and for me too... the best thing we can both do for ourselves is to forgive the other person for the things we think they did wrong. This is the best way that we can feel better about ourselves and know that we have done the right thing. We can not control what anyone has done in the past, or what they are going to do in the future.
Whether "the sister" was right or wrong about her decisions is something she will have to live with and answer for, you can only do what is best for yourself and your kids. It sounds like she might be reaching out to you now.
Good luck.
Could you possibly call her with a "rsvp" and tell her that you'd like to come but are feeling anxious about it? If she reaches out to you with understanding, and maybe even an apology, this could be a much needed healing for the entire family.