US Citizen (women) file Maintenance against Indian Husband

Dear All, in Feb 2011 i got married accidentally with US citizen who was lied everything about her and left india after 7 days of marriage she was Indian at age 28 and Marry with US citizen and went USA and got citizenship she is 49 Years old now and me 30 . she lived in USA may be with her husband now she is in India and filled case against me 1. 498a ( Dowry) 2. Monthly Maintenance initial 3 years only 1~2 months together ,rest time she was in USA then she lived in india 1.5 Years then i knew about her ( age , Marriage etc) April'16 she left india and living in USA and she comes to india in Jan'17 so i left home and did not met her , mean while she filed cases against me by the power of USA citizen . she had Gov Job in Newyork , then fired but for expense she can eassily get the Unemployement from Gov of USA she is big Fraud , i got her Marriage Album ( Year 1995) She is using Indian laws to Hurt me as i knew about her i can not spend 1 sec with her . what precautions i can take and what are my strong points against her. please support and advice . thanks