I think its all Guruji's plan. Vatsalaya probably learnt about having a sister in Benaras.
As per Guruji's prophecy, Vatsalya was suppose to be the one who should be s ent away from LM if has to live. The prophecy never was for Anami. But Satrupa in he r putra moh chose Vatsalya over Anami.Initial episodes suggest Guruji at some point of time had realised it. He was very worried about Vatsalya.
This way Guruji saved both the children and both got their due recognition. He made Vatsalya live an anonymous life as per the prophecy. Remember it was Guruji who reminded Sattupa of her daughter. Satrupa otherwise would never bring Anami.
In a way Satrupa , Baldev and all LM people deserves to be punished for what they did to Anami and Narottam. Only Pandit , Panditayin and Anami suffered unnecessarily.
One important question here is if not Vatsalya who died in that car accident?