Ansh's kidnapping was about Aarti letting go of her unhealthy obsession so that Ansh could have a healthy relationship with Yash. If we draw that parallel, then Yash's unhealthy obsession that is holding Palak back from a relationship with Aarti is not, as in Aarti's case, the attachment and possessiveness towards the child herself, but his fierce protection of Arpita's memory, treating her as though she was still alive. I feel like the drama will unfold between Yash and Aarti over Arpita's identity while Palak actually comes closer to Aarti as a result of this.