Regarding null and void marriage

Dear sir 3 and half years back my first wife passed I have one kid 2yeas back I got married again From the day 2nd itself she started to gave mental taurcher 3rd month she went to her house and asked me to come with her by leaving my son and my mom Like this 2yrs gone she put lot of conditions to live together Her intension is to get my property and to seperate me from my some nd mom Recently I came to know that before me she got married with some one and it's n court But they hide that marriage from me I collected some details about that 1. Regiatration details From register office where we got marriage registration certificate Note . In that she mentioned this s her first marriage 2. Details from court of her first marriage My marriage 's registered on 5th of November but her first marriage final hearing for divorce is on 25th of November So with out getting divorce she got married with me by hiding her first marriage Is there any possibility to get divorce from her with this information