How would you react to a train attendant ignoring your child because they have straight hair?

So me and my 3 children were on our train ride home from visiting my MIL and this flight attendant was overly friendly with 2 of my children because they had curly hair like she was in awe and touching their hair and telling them how cute they are and played with them and my straight haired child was clearly upset and went up to the attendant who literally just ignored her and kept praising both of my 2 curly haired children. My straight haired child sat in the corner upset looking at them.

Now that I think about it I kept thinking I should’ve said something to her but didn’t know if I was overreacting…