My fiance and I do not want any children at our wedding. It is an adult event with close family and friends, around 125 guest. We indicated on our invitations "please respect our wishes of no children". My fiance's aunt is really upset that her grandson (age 2) is not being included in a family function. She isn't saying anything to myself or my fiance as of yet but just to my fiance's mother (her sister). This aunt is really putting a wedge between her sister and her about this issue. How can I politely explain to her that I'm not changing my decision to have children at my wedding?