Why you ask, well ill tell you.....
She gave birth to Maulik, then...
Her husband took away Arjan thinking its his son, then...
Arjan came back and Maulik made him evil, then...
Arjan tried to kill DM, then...
Birwa killed Arjan, then...
Santu went to jail pregnant, then...
DM met Megha, then...
Megha took Vishal, then...
We reach to where Vishal hates his parents
So techniquely she caused all this, if she never had Maulik, she would be happily married away from this house, Arjan would still be alive, Kemi would be married to someone else and not be a widow, and Vishal would have grown up with his mom and dad...sadly though, this drama would have not been interesting up to here if this happened, I just wanted to point this out... :)