WIBTAH for coldshouldering my grandma and dad

I am just 3 days away from moving into my uni dorm and I genuinely feel like I am at my limit with my grandma

My grandma mostly stays with us (my parents, me) but sometimes she goes back to our homecountry to visit family. Since my internship ended, I've been mostly at home waiting for uni to start

Now, my grandma has always frustrated me. She keeps trying to sabotage my parents relationship so much that my mother was compelled to get a job in another country (and lived there with just me and my brother for 13 yrs) so my grandma could happily stay at our house

My grandma always tries provokes my dad to be mad at my mom which really pmo. Once, my grandma decided to randomly switch up a tradition and when my mom just asked her "are we doing it this way today" my grandma insisted "our (excluding my mother, diff ethnicity) family has always done this" in a shaky crying voice so my dad would get mad at my mom for 'making his mom cry'. She does something like this EVERY SINGLE celebration, she finds some way to make my dad mad at my mom bc how dare we make her cry (she never actually cries)

My grandma has always had a problem with me. Especially since I started watching my food because she wants me overweight? Food is also something my grandma weaponises to victimise herself. When Im at home, she comes to my room, pretend to knock/whisper my name really softly to call me for lunch and then mope that I 'ignored' her when I actually had 0clue also bc my door is open! I avoid this by coming for at 11 now. She also gets upset that I prefer my mother's cooking. Literally when I take food my mom made for me she gets annoyed. But it isn't like she wants to interact with me either. I act and whenever I ask her to please come for my plays, she never has. no reason, just 'didn't feel like it'. Now whenever I take a rest day from gym, she will keep asking me when I will leave like she wants me out

Now I know for a fact she wants me completely out of my house because this week, while I was out, she asked my dad to send her back to India OR to an oldage home because I make her feel 'unwanted' and she feels cast aside in the house

I constantly have to leave my work immediately to do chores she suddenly wants to do,my dad literally spends $1.5-2k on just her shopping and 'gifting' others. She told him that I get annoyed and I don't talk nicely to her but I literally do? I never talk back, just say yes to whatever she says.She told my dad I speak loudly when talking to her but I only do so when she's blasting a video on her phone while talking to me. She's made me realise how much she hates me that I haven't even been in the house for long these past 2 weeks. Im in the library or gymming until my mom comes home from work

I dont plan on interacting with her and dad at all the day I move out. I told my mom of this plan and she said its a terrible idea. However, I gen feel like I can't control myself more. I just want this small rebellion of fighting back by coldshouldering her and my dad.