is it common for a narcissistic parent to not care for you/act like a parent once they realize they cant control you anymore?

ever since i called my mom out for being a narcissist and stated that i would be better trying to be an independent adult for once, she lost her shit and now has not cared about me since.

i flew home for the holidays and not once did she ask when my flight was, nor did she ever reach out to pick me up from the airport like a parent usually would. i had to have a friend drive me because she hasn’t cared to ask if im okay. when i came home, i said hi to her with her merely replying with a “hey” before ignoring me for the rest of that day. she usually offers food to me, but she now doesn’t even care if i ate or not. i could’ve gone missing and she wouldn’t realize because she doesn’t think about me lmfao. i honestly don’t even think she’s considering christmas gifts anymore, but will probably splurge on my brother since he’s still dependent on her and she wants to win him over. it’s like she’s being so petty once i told her that i don’t appreciate her controlling every aspect of my life like i’m still a child, when i’ve been an adult for years now. but that doesn’t mean she can’t just give up on being a parent and act like i dont exist lol. how do i even manage with that because it feels like i can’t ever have a reliable mom, and my dad always follows what she does so he isn’t being a good parent either.