Ms Vipassana is one of the likely successors of Gurmeet Ram Rahim Singh and is the chairperson of the Dera.
"Sirsa police will soon ask Vipassana Insan to join the investigation," Haryana DGP B S Sandhu said here today.
The police said it was making efforts to nab Ram Rahim's confidant and adopted daughter, Honeypreet, and key Dera functionary, Aditya Insaan who they believed are still in the country.
The Haryana police had earlier conducted raids at various places and police teams were sent to various locations, including Mumbai and the Nepal side. It was also in touch with the police of other states.