Can money lender force us to vacate mortgaged house

1. How can my mother counter file on Lender? My mother took 1 lakh in 2006 for ?2 interest with surity of my gand mother house documents, sign on 2 blank promissory notes. From 2010 we paid ?25000 month interest to her. She bargained our home for cheap price, we denied. She files a suit on dec'15 against my grand mother for 35 lakh(9+9lakh principle in mar'13, june'13). She's unauthorized money lender keeping blank documents for chits. My grand mother didn't file counter on her. Irrespective of that she's forcing us to vacate from her self acquired house, in which we are leaving since 1990.