Jealous mama friend

So I have a friend who's baby is a couple months older than mine, and it's awesome, but my daughter and her daughter are basically the same size and are both happy healthy babies. While my daughter is pretty advanced on her milestones which is amazing!!! But my friend is getting jealous that my daughter is ahead.... My daughter has now said mama at 5 months old and ever since then she seems to not want to hangout with me... I don't want to lose my friend, but I don't want to feel bad about how well my daughter is doing