This is something that I just suspect. I don't think it is something that Ekta might have in her mind but I felt this would be more cinematic. I still believe Milind is faking this whole amnesia track just to keep Prachi safe for now. He is now making Ayesha happy about the marriage to just divert her attention from disturbing Prachi. Later the whole marriage preperation might go on in full swing and she might be just as happy as prachi was. he will keep Ayesha in her dreamland till the day of the marriage. Then probably on the day of the wedding in the mantap while putting the magal sutra on ayesha he might walk away and put it on prachi leaving the whole family and ayesha in a state of shock. Then he might give ayesha left and right and insult her in front of the whole family for doing something soo miserable to prachi. He could do this to just make her undergo the same pain that Prachi went through. Later Ayesha might swear to take revenge on Milind and join hands with Alaap for the second track focusing on sukruthi.
I hope you guys liked it.