Threatening by Daughter in Law while matter under sub judice

My daughter in law left my residence at her own wish while having 5 months of pregnancy. She aborted the child at her parent's place and after three months of the incident filed a case on me, my husband, my son, my daughter, and my sister under 313 and 498A. We are struggling with the burden of the case since 2017 and during these years she and her family has become rich by getting into a prostitution business. Moreover, she is a habitual domestic violence woman and formerly married with two persons and left them after harassing them with 498A and charging lump sum money. Charge sheet filed by the investigation officer, who was also her customer, so it's against us. The matter is under sub judice and trial not yet started. But, now she is calling my son and threatening that she can come back anytime and stay in our house. Please suggest how to handle the situation.