You can't control what others do, you can only control what YOU do, and you are entitled to feel however you want.Keep yourself sane with the knowledge that you have done nothing wrong, and athat sometimes our decisions are taken away from us.
Some years ago my mother passed away, and my only sibling did not have the deency to let me know.......I received a letter from an old friend with the obit in the envelope. I went through the whole range of emotions, and while I am still a bit bitter about it, I know I have done nothing wrong, and when things are all said and done, it is my sister that will have to face her Maker with her wrongs.
Families.......they can be great and they can be horrid. If you are lucky, you get some of each.