This is every household story.
You have no rights in your dads property which is self acquired.
Your m oter can file compaint under domestic violence act aginst your dad for emotional mental physical abuse and for maintenance . If he sells house get order form magistrate to make your dad arrange for your accomodaiton soemwhere else or where he will live.
Unmarried dasughter and your mother bcan claim maimtenance from dad.
Does he earn ? what is his income?
Also Your mother can also file a police complaint against your dad
Is this hosue elase basis or free hold basis. where are you located . In many citieslike Delhi state after 2001 all property sold by DDA is compulsory joitn with spouse.
If youhave invested money in house you can ask for some amount from sale of house to recover your investment . That is fair
YOur lcoal counsel will tell you tricks to take stay omn sale agreement if he sells it.
This will build prssure on him to come to negotiation table
I am sorry to ue words but by your story and condtion your dad appears to have crminal bent of mind and no candidate for any compromise exoneration
Talk with him in legal and tough language now
If you have some witness file defamation suit against him for spreaduing cvanard agaisnt you and breaking your marriage. It is a criminal offense too.
Dont boter about legal notice of your advocate. These are empty therats.
Dont be afriad. Indian judcial system is very strong and fair. It bis very slow of course. Nothing is going to harm you. Only your dad will get harmed . Laws todayare women favoring.
Just relax and feel good. We are with you.
Only problem you will have to arrange a lawyer. Most people today face problem to get good and reaosnable lawyer. Unfortunately this is weak point today for legal system
You may seek legal aid througha women NGO mor legal aid cell in distrcit court coimpound.
WE will guide you from time to time. Not much more we can do form remote.