Social media behavior/doing things we used to do together

For context, I was seeing an avoidant girl for nine months who refused to commit to a label because she needed to “figure her feelings out” before self sabotaging and pushing me away two weeks after going out for my birthday and the day after Christmas claiming that she didn’t see herself going anywhere with me after not speaking for a week at a time and not committing to plans in those two weeks.

It’s been 3 months since then, and it feels like she’s been much more active on social media. Posting stories of her hanging out with our mutual friends, posting songs on her notes that seemed somewhat targeted(?), and making four posts in three months when she usually posts maybe once every four months or so.

Additionally, I took her to her first ever baseball game at the start of last season (she knew nothing about it) and we ended up going once every two weeks or so for the rest of the year(almost 15 games total). Now, I’ve seen through mutual friends’ stories that she went to the first two games of the season in addition to an international tournament game that was hosted in our city(which I also attended and posted about), and posting about them on her story along with a whole post dedicated to the games.

I guess what I’m asking is is there is any reason why she would be posting more often and specifically doing things I introduced her to and frequently did together? Am I just overthinking/overreacting? This was the first “relationship” for both of us, and I’ve admittedly been struggling to process and move on from what happened. Thanks.