January 4
Coincidence that right after step insisted KaMini should call Guru maa she answered their call. Guru maa will come to TH that night.
R sees step talking on her phone right after KaMini called Guru maa.
Step looks filled with hate when she says R name.
R feeds one fine Mohan,he goes back to possessed mode,tries to strangulate her and scares her with his red eyes. If this was his alone plan no better time to reveal it than after this scene.