I am a Canadian PR Card Holder and I sponsored my Husband for the PR. Want to lodge FIR in India

Hello, I am an Indian by birth and hold Canadian PR card. I sponsored my husband for Canadian PR as well. I used to get physically assaulted by my husband, threatened by him, mentally abused/ tortured. At one point, I even believed that he had been performing adultery on me as well. There had been instances where he used to break glasses, throw things from the kitchen at me and since I used to get threatened by him so many times, one time I thought of calling his mother and father. Instead of scolding their own son, they used to bash upon me. Instead of understanding my situation they used to stand up for their son and put the blames on me. I later came to know that this behaviour of theirs, had only come to the surface after their son got Canadian PR as this was the only way he could have got the PR. Before holding the PR, their were some fights in between us like normal fights between husbands and wives. The boy and his family’s behaviour suddenly changed after he got the PR. 7 months from now, he left me abandoned at the house we bought together, also leaving behind his car ( which he purchased on my credit) and went away to a different province. He did that as he got a very good job somewhere. He also left me in a financial crisis. He then, sent divorce letter and I also signed the paper as I don’t want to live with him anymore. However, we both have to be separated for at least year ( till date it has been 7 months exactly). He also made claims for the cost of family property in Canada which got recently sold in loss where both the parties will have to pay. ( $8000 per person) I didn’t have a lot of money. I also had to do 2 jobs in a day to earn more. Now, I am a bit better by taking healthy mental therapies though but I still feel shivers whenever I remember his behaviour even now. Currently, the boy is in India for her sister’s wedding and I have come to see my parents too. It might be possible that his parents must have been looking a girl for his marriage too. I want to file a case against the boy while he is also in India and open LOC against him. The case on the grounds of mental torture/agony, financial debts, physical assault, threat, misrepresentation, his only motive to get the PR in Canada by marrying me, cheating, dowry etc. My questions are : 1. Since I want him out of my life, will there be any problem with the divorce in Canada if I file Any case in India? 2. Can he backfire at me by putting any allegation after FIR? 3. Will I have to come from Canada for multiple times if I file the case In india, due to court’s orders? 4. Can we get my parent’s hard earned money which was used in the marriage? 5. Can my parents be present in the court on my behalf? 6. I have also applied for Canadian Citizenship. Will there be any problems regarding the same? Please help me out in this. A good advise is really appreciated. Thank you