Hey there!
Background: About the same time that we got engaged, my FH's brother and his wife separated. We sent the pair of them a save the date when they were back and forth about the idea of divorce, figuring it was not really our business and if they still were a couple, that we would be happy to have them both there. Since then, lawyers have gotten involved and divorce is pretty much going to happen. FH's brother has made it clear that he does not want us to communicate with her while lawyers are involved.
I am addressing wedding invites, and I have no clue how to address his invite. Should I include her since the divorce is not final and not my business? Or would that be an insult to him? I do not want to send a separate one, because I do not want FH's brother to be uncomfortable at our wedding, if she is there, we would be happy to have her, but want to leave it up to him.