So while i was watching today's episode and re-watching old episodes something clicked my mind and i came up with this theory.
What if the doctor called Mandaar's family that night and Aai picked up the call. We now know that Aai was pissed off at the way Vijay Deshmukh treated their son so she went to the hospital and found out that Mandaar lost his memory. Thinking of it as a way out for his son from a torturous father and a forced marriage, she called up her friend who is a doctor ( the same doctor they mentioned in today's episode who takes care of Mandaar as her own son) . That doctor might not have a child so maybe Aai have up Mandaar to her so that she can take away her son out of his miseries and away from her controlling husband.
And so she might have faked illness when a body was found so that no identification is done and everything gets over soon. Since she chose her son over everyone, she might have felt guilty for ruining Pallavi's wife as the society marked her as a widow and to overcome that guilt she took Pallavi under her wings as her daughter and later tried to wed her off to give her the life she once snatched away from Pallavi.
This is just a theory i thought because when kaka told her on call about Pallavi's supposed hallucination of watching Mandaar, instead of being a little hopeful that her son might be alive ( i mean she is a mother for God's sake, she could get a bit hopeful) she dismissed and agreed of kaka's point of view of all this being Pallavi's imagination.
P. S. Don't throw tomatoes at me even i don't know why i thought all of this 😂😂😂