This will only come after second leap in iraboti....sai will escape from hospital fire with her kid aarushi and nurse hand another kid trisha to virat...virat think sai is dead
virat will fake marriage for his kid to another woman who is sai's sister and his brother's fiancee (here didi...he won't marry....just lie they married)....and sai will think virat cheated her...she will start to live with another man calling samrat...
After 5 years she comes for revenge...first she won't admit herself as sai and fake her identity and comes to virat's home with kid....later when virat found herself as sai...then he will physically abuse the kid since he thinks its not his blood....virat throw kid and sai out of house...sai warns him for misbehaving with her daughter and returns....and sai will prove the kid whom he is living with is not his...then he will blame sai for killing his kid in hospital fire to run away with samrat...by the time arushi will run away from sai's home in search of virat and end up in mafia's hand and virat comes to know aarushi is his daughter...he will remember all the physical abuse done on her and cries...(he will behave worse...even pushed the kid and she fell on floor...he made her to beg on his legs) and how she saved his life...after divorce and character assassinating sai many times...virat will beg sai to cancel her wedding with samrat and remarry him...when sai backs out marrying samrat he will become obessive of her....then virat's mother will be killed and virat put sai in jail accusing her....later she herself bails and protect him from samrat who want to kill him who actually killed his mother....then sub plots followed by kidnap of aarushi and sai becoming insane and a son is born who doesn't like her as he feels his mother didn't love him as much she loves missing aarushi...then comes leap where we we will see the perfect copy of sai...aarushi