moh Help!

Hello WW Community! I need some advice please! (Sorry for the long post)

I want to give some back story first. I got married on June 9 and had all of our brothers, sisters, and their spouses in the wedding. One of those was my husbands brother and his wife. She was very helpful and attentive at first and then later on in the planning process we heard she was saying a lot of negative things about me and our wedding. We let it go because we knew at that point there was nothing we could do since kicking them out of the wedding was never going to be an option. They were a pain to deal with at times, but they still came to the wedding dressed and that’s all that we asked of our bridal party.
About 4 months ago, my sister in law (husbands sister) decided she wanted to get married. She asked our opinion about having “Amy” and “Joe” in the wedding party because Amy had been saying all this negative things about the wedding to her. We told her our honest opinion that hindsight being 20/20 we may have decided to avoide the stress all together and not have had them in the wedding but there was nothing we could do at that point. She told us she wasn’t going to ask them to be in her wedding party, and when it came down to it she didn’t. Her (H and Joes sister) and her fiancée were not getting along with Amy and Joe at that point too.
Months past and I begin doing my MOH duties and she asked my opinion about adding Amy and Joe to the wedding. I told her my honest opinion that I wouldn’t add them because of her negativity and because they had already asked their wedding party and it would seem like an after thought which is rude, but it was her decision. I began reaching out to her bridesmaids to begin discussing the bachelorette and bridal shower.
Well last night she drops the doozy as we were texting each other. She said that they did end up asking Amy and Joe to be in the wedding. Now my question is this, how do I include her now? I feel like it’s more awkward because Amy is also my sister in law and I don’t know how to go about it. Shes also the type of person to take things personally too. I don’t want to hurt any feelings or get involved in any unnecessary drama. Some help would be greatly appreciated! Thank you!