Am I wrong here?

My mom had a shirt made with all the grandchildren’s names on it. Except one..

Our youngest daughter passed away 11 months ago. She’s not on it, but my sisters step kid is on it and her husband cheated on her while she was pregnant, and got the other girl pregnant. A few family members sent the picture from Facebook she posted it.

My husband and I, along with my brother, are all super upset because she left out my daughter but my other daughter isn’t on it.

Before anyone says maybe they were trying to “spare my feelings” or maybe they were “hurting” or it would bring up feelings, it wouldn’t. My mom told everyone she only cared about my oldest.

I don’t talk to her much anymore so I shouldn’t care what she does, but this just broke my heart.. she never even asked how she died. Am I wrong?