What legal action can be taken against breach of divorce decree?

Hi, I have been divorced from my wife for over a year now. As per the decree terms, I am in possession of the house and was ordered to pay the EMIs until it is sold. I am the co-borrower on the home loan, but my ex-wife is the primary applicant and sole owner. I continued to pay the EMIs to my ex-wife (as the bank deducts them from her account) and lived alone in the house until last month, when she called and asked me to vacate it. I vacated the house within 24 hours. Now she is saying that I must continue paying the EMIs, otherwise it would be a breach of the decree and she will take legal action. I even paid two months’ EMIs after vacating the house. I am not bound to pay any maintenance to her or the children as per the decree. I have visiting rights for the children, but she never allows me to meet or talk to them, always giving vague excuses. She is well-educated and earns a handsome salary (higher than mine). Can she legally challenge me? What legal remedies do I have? Please guide.