After Saahil and Ganga got together, a new character makes entry and that character is Ganga's child and Ganga tell everyone that she adopted. But Tanya finds out the truth and is trying to prove that it is her biological child and they are huge problems of the between them and when DNA is done the child blood matches Karan and Tanya accuses that it is Karan and Ganga's child but truth comes as Ganga and Nandni tell everyone that the child is of Karan and Nandni. After giving birth to the child in Jail she give it to Ganga and asked her to raise it.
Note: It is nor from any article, it is just my point of view.