A bit of backstory: Me (28F) and my friend, let's call her Leah (28F) have known each other for 11 years. Both her parents have been abusive toward her for her entire life, but the worst offender is her mom (5?F) She is constantly giving Leah grief about her medical issues, calling her lazy when her chronic pain gets bad, not paying attention when Leah seizes, annoyed when Leah has to go to the ER, etc.

Leah once sent me a recording of both her parents bullying her (literally acting like high school bullies. Mocking, name-calling, the whole shebang.) And I was at the hospital with Leah the day after a difficult surgery where I witnessed her mom cuss her out over the phone because she couldn't answer her mom's questions because she was high on pain meds and 5 mil of Ativan.

I had kept my mouth shut to keep the peace up until this past Thanksgiving. Leah called me, and she never calls, so I knew it had to be urgent. I answer and she's crying. I can hear her mom yelling at her in the background. Leah asked me if I had remembered her telling me about her mom stealing a bunch of her movies and clothes and donating them to Goodwill a couple years ago, which I said yes. Her mom did it while Leah was away at college so she couldn't be caught and stopped. Apparently, this had come up in conversation and Leah's mom was trying to gaslight her into thinking that didn't happen when it did.

After a minute or so of listening to them argue, Leah's mom calls her a bitch, and that was my breaking point. After almost 11 years of keeping my mouth shut, I let her have it. I called her a narcissist, a c*nt, and a bad mom, among other things. I have since not been allowed at their house and Leah has to lie to be able to hang out with me.

The last time me and Leah hung out, which was about a month ago, she expressed that she wished I hadn't of cussed her mom out because she now has to sneak around to be able to hang out with me. I think she should just be the adult that she is and stand up to her, but I know that's easier said then done when dealing with an abusive parent that doesn't respect their adult child's agency or privacy. But her comment rubbed me the wrong way because it felt like she was blaming me for a situation her mom created. I don't think I should get chastised for standing up for someone.

So, AITAH for defending my friend from her mom by cussing out her mom, resulting in restricted contact between me and my friend?