I am sorry to hear about your ordeal. I don’t know which country you are in. This is important as we will see below.
Getting Indian courts to recognize mutual-consent divorce decrees passed by foreign courts can be surprisingly difficult. This is despite the fact that the SC in Y. Narasimha Rao And Ors vs Y. Venkata Lakshmi And Anr 1991 SCR (2) 821 carved out an exception for precisely such decrees from the statutorily mandated position of Indian courts not accepting decrees of foreign courts when such decres are, among other things, founded on a refusal to recognize Indian law.
Be that as it may, you have the following courses open to you, to wit:
1. Seize the initiative and file an execution petition if you are based in one of the handful of “reciprocating” countries (namely: United Kingdom, Singapore, Bangladesh, UAE, Malaysia, Trinidad & Tobago, New Zealand, the Cook Islands (including Niue) and the Trust Territories of Western Samoa, Hong Kong, Papua and New Guinea, Fiji, Aden).
If you are based in any other country, file a suit for divorce based on that foreign decree, or on the underlying cause of action, or both; or
2. Wait for your ex-wife to file a divorce case and then challenge it at the outset ( under Order VII Rule 11 CPC) on the basis of the mutual-consent divorce decree obtained abroad.
I would personally advise you to go with the former as your mutual-consent divorce decree has no legal sanctity in India at the moment. With the latter option, she will have the initiative. There is also the question of limitation—suits in relation to foreign decrees have to be brought within 3 years from the date of the foreign decree.
If she wants to harass you as you say, you are going to have to bite the bullet and fight. So you might as well beat her to the punch and preempt any false police complaints.