Second marriage validity and alimony

The marriage is happened on 10 July 2016. This was a second marriage for both of us. I had a legal divorce decree from my first marriage before my second marriage. But my wife had no legal divorce decree from her first marriage and I was unaware of this. Now my wife has filed a divorce petition under section 13(1)(ia) in Nov 2018. She has made all false allegations in the notice and demanded Rs. 30 Lakh as cash money along with Rs. 50,000/- as life long monthly alimony. Before marriage her education was B.C.S.(Bachelor in Computer Science) and after marriage I continued her education. I admitted her for MCA (Masters in Computer Application - full time post graduate professional degree cource). With my financial support she completed MCA in 2018. But she is sitting idle in a hope that court will grant her alimony by me. The court hearing is on 21st Jan 2019. Please help me to understand, 1) Can I plea for this marriage annulment as she had no legal divorce decree from her first marriage? 2) Can I plea for no interim or permanent alimony as she is highly qualified with post graduate professional degree that too with help of my financial support?