Making mom friends

any one else have a hard time making mom friends? Currently i have a friend that seems to hide that we are friends. I dont feel like she tries to talk when we hang out. I noticed she likes to post alot on social media who shes with and i realized she hasn't said a word about me.

when im there with her for parties she has her friends without kids shes a chatty cathy but me im outcasted entirely(happened. Multiple times). Is it just me or is this not a real friendship?