Regarding Criminal Case Of 420 ,120b

My late maternal grandfather purchased 7 acres of land from his uncle in 1984. My maternal grandfather died 1996.no will.he had 2 child,one is my uncle,2 is my mother.In 1997,my uncle individually sold 2.30 acres to 3rd party.In 1998,my uncle sons filed partition suit in court that they want share each (2 sons).Preliminary decreed in 2005.While case is on, third party want to buy land of 4.70 acres(out of 7 acres)(2.3 acres already sold in 1997). Though 2.3 acres sold in 97 itself.but the suit for total 7 acres.My uncle and my mother informed 3rd party orally that civil suit pending in court.third party agreed to buy.Sold in 2006 for 1,88,000. (Though market value 8 lakh in 2006).then uncle sons got exparte decree in jun 2010.Thereafter 3rd party filed criminal case in 2016,under sec 120b 420.Uncle died 2020.mother filed 482 crpc for quash In HC.got stay.but that stay extended order required in lower court.but lower court tried list of witnesses.how my mother get relief in this case.