Will they change the ending of Hum Kanha Kay Sache they?

Do you have any idea if the show makers have decided to go with the original novel and make it a tragedy or they would have a happy ending.

This has become one of my favourite shows. And I don't want it to be a tragedy like the original novel. Mehreen deserves happiness in the end. I so wish they don't be cruel to her character like the novel. Someone said Mahira told in an interview that ending has been changed. Could anyone share the link of that interview if it's true? For I don't see it happening because the ost had both the tragic glimpses, Mehreen being taken to jail and then Mehreen turning mad. I can't bear Mehreen getting mad.