Mother has been harrasing us all for months, advice needed.
My(21M) mother has been harrasing my father for a few months now. For context my father is a tuition teacher and travels to the students home to teach them. Whenever he was out and came back she accused him of cheating on her even though he just works, toils away on his bike and travels back home in the harsh delhi heat and traffic.
She has already multiple times broken his phone. She abused him almost everyday and me and my sister kept it from escalating too much so she called me and my sister the worst imaginable things possible (Just think the worst you can and you still won't top the amount of disgusting stuff she has said to my older sister, i genuinely wanted to hit her but it's my mother so held back and tolerated it like we do always).
However she crossed all limits possible yesterday, father came home after work and she started abusing him and saying stuff like she'll slap him and stuff. I was at university at the time but my sister was at home and when i came home she briefed me on what happened. Essentially she was abusing him and accusing him of lying about classes and going around and meeting up with other women but my father is a 55 year old man who barely gets time to rest much less go meet up with someone. She's been baselessly accusing him of all this stuff for a few months now.
At night after all the drama father refused to sleep in the same room as her and she started slamming doors like a mad man and we ignored her but she took his phone and locked the door so he cannot go to his class next day so i had to break open the lock to get it back but then when i tried taking the phone from her she attacked me and father heard the commotion and came to help me and she attacked him as well and was trying to gouge out his eyeballs and he got hurt near his eyes (scratches) and then when father retaliated in self defense she said she'll file a Domestic violence case but she didn't.
Now me, sister and father have decided it's better if father divorces this horrible human but there are some big hurdles. First father put our 2bhk apartment on her name when we bought it 15-16 years ago. Second she's illiterate and completely uneducated so we are really scared of alimony, but we father teaches tuition and does not have a lot in savings and his income is variable. So if any alimony is rewarded me and my sister will have to help father pay from our savings (we have money but it's still unfair if we have to since i am a uni student and my older sister is studying for a government exam and father is the only earning member rn and finances are already tight).
Now we don't know what to do we really want to leave this woman behind and try to rebuild our family and live happily since father is already 55 and i don't want his entire life to be stress and conflict but then this illiterate woman has us in chokehold mentally torturing all three of us and now even physically assaulting us.
Although i did not get the video for the fight itself since i was too busy trying to make sure my father isn't disabled by this mad woman, i still was able to record the aftermath where she is cursing everyone and breaking stuff.
How do we proceed with this?
TL;DR: My mother has been severely emotionally, verbally, and physically abusive toward my father, my sister, and me—recently physically assaulting my father and trying to gouge his eyes. My father (a 55-year-old tuition teacher) wants a divorce, but we are terrified because the apartment is registered in her name, we fear high alimony demands despite our tight finances, and we need to know how to legally protect him. We have video evidence of the aftermath and need a clear, actionable roadmap on how to proceed. She's illiterate and has no source of income.
I posted this like half an hour ago but for some reason it was not visible so deleted that and reposting this.