DEAR ABBY: My young daughter is the half-sister of a famous athlete’s wife. They were married last year and invited my daughter. A week later they DISinvited her! There is a 20-year gap in their ages, but my daughter looks up to her half-sister. My daughter’s feelings were really hurt. My feelings may have been even more hurt. All of her other siblings were there, as well as several other family members.

We were never told why my daughter was disinvited. Her father did not stand up to his older daughter for breaking his younger daughter’s heart. My daughter is getting older, and she knows who her brother-in-law is when she sees him on TV. How can I stop being angry at these people for hurting my baby? — FURIOUS MAMA IN MICHIGAN

DEAR MAMA: You stated there is a 20-year age gap between your daughter and the bride. Is it possible that the bride and her famous fiance had concerns about someone so young (7, 8, 9?) at their high-profile wedding? Before your resentment continues to build, try having a rational conversation with your daughter’s half-sister so you fully understand the circumstances. While I do not support disinviting someone from a celebration, it’s possible that the invitation was sent in error.

Read more Dear Abby and other advice columns.

Dear Abby is written by Abigail Van Buren, also known as Jeanne Phillips, and was founded by her mother, Pauline Phillips. Contact Dear Abby at www.DearAbby.com or P.O. Box 69440, Los Angeles, CA 90069.