AITA for cutting off my cousin and wanting to cut off my aunt, even though my family says I’m being childish because they’re blood?

For starters, I posted this before, but it got removed by the mods. I also deleted it because I realized I included a lot of unnecessary background.

This happened about a year and a half ago. I was 17/18F, my cousin was 16F, and my aunt is her mom.

I had my cousin on my private spam account with only around 40 followers, mostly my closest friends. One day I made a post saying I felt hurt after finding out she had muted me on Instagram because I “post too much.” I wasn’t trying to start drama—I was just venting and wanted outside opinions.

She ended up seeing the post and replied telling me to “shut up.” I asked what her problem was, and she kept insulting me. I told her she doesn’t pay for my phone, so she doesn’t get to tell me what I can and can’t post. She started calling me stupid and dumb, then bragged that she doesn’t have to work because her parents buy her everything.

I’ll admit I wasn’t perfect during the argument. I got defensive because I felt disrespected. But after that conversation, I realized our relationship wasn’t healthy, so I blocked her and cut contact.

Now, over a year later, some family members say I’m childish and should move on because “she’s family.” My mom recently told me that my aunt blames me for the entire situation and believes her daughter did nothing wrong. No matter what my cousin says or does, my aunt always defends her.

The thing is, my aunt and I don’t even have a relationship. She didn’t come to my high school graduation, never wished me a happy birthday, and has never really made an effort to be part of my life. The last time my mom was on the phone with her, I just ignored her and went to my room because I didn’t want to talk to her.

My mom keeps telling me that “family is family” and says I’m being disrespectful for wanting nothing to do with my aunt. I don’t see it that way. My aunt also treated my mom poorly over the years, yet my mom still expects me to keep the peace simply because we’re related. I don’t think sharing DNA means I have to keep people in my life who don’t respect me or make any effort to have a relationship with me.

To me, this isn’t two separate conflicts. It’s one situation that led to another. I didn’t decide to distance myself from my aunt for no reason. Watching her constantly defend my cousin, blame me, and ignore how her daughter’s behavior affected me made me realize I didn’t want a relationship with her either. It also brought up a lot of other issues, including how she and my uncle treated my parents and my sister over the years. This was just the final straw.

So now I’m considering blocking my aunt too.

AITA for cutting off my cousin and wanting to block my aunt, even though my family says I’m being childish because they’re blood?