First of all Milaane ka vada nahi karna chahiye tha; Koshish karoongi that is what should have been Anandi's reply to Ratan's request;
She knew everything; She remembered everything; Ratan had tried to kill her family too; She did not forget it bas seeing a dying man she did not have the heart to refuse; Not every time you should think from the heart; head should be used too
If Mannu has to meet Ratan then he will have to know the whole truth nothing should be left untold; He is 15 and can be easily confused
This is not the case of an adopted child; He has one bio parent and one adoptive
He has to know the situation his mother came out from and which was mainly because she had him and his future to think about
There is no need to bad mouth Ratan bas tell the kid everything so he does not misunderstand JaGan
Then leave it to him if he wants to meet the man who almost killed his mother and the entire family which is his now
I want it to be Mannu's decision and no one else's
If he says no I don't want "Anyone" to tell him to re think about it
If he says yes then too it is good as the information which he has just got will raise questions in his mind and he needs to be at peace after it so he has to talk to Ratan and get answers
The closure will also help him deal with Abhi in the future because that day is not far away when saga sautela comes to Abhi's mouth