As much as people like to insist otherwise, when you regularly socialize with the same five or more people, not everyone gets along at the same level of camaraderie or intimacy. There are some people you only chat with in the group chat and never hang out with one-on-one, because you may all love each other, but your individual personalities don't mesh - at best, your natural friction emerges in a battle of competing memes on WhatsApp or arguments around who to Venmo.
"During the early days of the group, there was another mom who often wasn't included. I'd picked up on hints of a weird dynamic, but at the time, I didn't dwell on it too much. I was just so happy to have found these incredible, smart, funny women. Now it seemed that this group had a pattern of leaving someone out. And that someone had become me," she claimed.