False accusations of 498a dowry, Domestic violence and Maintenance

I am an NRI residing in Canada. Due to some dispute and differences in the broken marriage, I proposed to ex for the divorce following which she went back to India and, didn't do anything until divorce papers were served to her. The next thing I know, to retaliate, she made false accusations on me and my family of 498a dowry, domestic violence and maintenance. The year had passed and nothing had been done to solve against these false accusations. On the top, she has been messaging and calling me and forcing me to change my mind for the divorce and reconcile with her by threatening that she would not drop the cases if I would not change my mind to give her the divorce. Please note that in Canada, my divorce has been granted on. But among this mess, I have not being well-guided up until now as to when and how I should be filing for the divorce on perhaps either same degree or on the basis of "Mental Cruelty" as well as what steps I could take to get myself and my family out of these false accusations? I have told her to stop forcing me and threatening me on the face of this false accusations and that my decision is irrevocable to part the ways. Now, I do have the a set of evidence which proves that she was well-kept in financial and matrimonial ways during the matrimonial times as well as the proofs which do prove that she is forcing and demanding me to be with her by giving threats stating that it might be the only way to drop these allegations. Could you please kindly guide me as to what could be the ways to solve and end this matter as soon as possible? Should I file a lawsuit against her because of her false accusations? if Yes, then how much helpful this could be and what ways? (The reason why I am asking this is because I don't think she would stop all these until she will be exposed of her fraud allegations). I know these case could be stretched for very long which I do not want. Please provide me your significant guidance as to what are the ways to solve each and every aforementioned cases provided the fact that I do have the significant evidence to prove all her accusations false? Can I apply for the divorce based on the Mental Cruelty? kindly advice. Thank you.