My fiance was very close to his best friend (best man) and his wife and was the officiant at their wedding. He is close with his best man's wife's family and sent a save the date to her parents. Flash forward 6 months and they're in the process of starting a messy divorce in which she hasn't spoken to us this whole time and we haven't seen her family. We definitely don't want her there and now we feel it's extremely awkward for her parents to come and could be emotionally traumatic for the best man.
Do we:
Send an invitation and hope they don't come?Send a letter apologizing but "we feel it's best to avoid any potential awkwardness..."