Friend Breakups?

Me and my best friend have been friends for almost 10

years but now it just seems… weird. I know everyone isn’t available 24/7 but if I text her, she won’t respond for week(s) but will post on social media. She’s a serial flaker and when she does come around it’s almost like she doesn’t wanna be there. I have tried talking to her about certain situations and how I feel but it’s like she turns everything around on me. I’m not innocent either I was in an abusive relationship and I leaned on her as support and I should’ve never done that cause it can be overwhelming. I’ve also dealt with depression and currently trying to heal from breaking off the abusive relationship. I’m also the “God Mother” to her son but I wasn’t even invited to his birthday party… I’m just at my wits end and I’m ready to let certain things go, am I being rash in my decision?