I'm conflicted if I should invite my estranged sister? I've had no contact with her for more than a year. I've sent here a few text messages over the past year but she hasn't replied to any of them. My parents do see her occasionally and she told my parents she (and her 3 kids) won't come to my wedding. It really doesn't matter to me at this point in my life if my sister comes to the wedding but it makes me very upset that she won't let her 3 kids (my nieces and nephews) come. My sister's ex-husband asked if he could have the 3 kids the weekend of my wedding and she won't let him (yes, if he had the kids he'd bring them to the wedding). I mostly want to send her an invite so she can't say I didn't since I know she won't come.