Most important point, Sadhna was throughout hated by Vasu and was plain utilised by Vasu for the Rajvansh family. I have a feel, Vasu is also doing the same towards Anmol. She does not like Anmol, but somehow "jhel rahee hain", for the Rajvansh family and business...
Anmol= Sadhna,
Motif: happiness for Rajvansh family and to side with Ragini and project her goodness