Story name please

[vaanmathi]

I read this story in TNW sitenu ninaikuren but not sure the story start with heroine brother is working with hero in his office hero grandfather and father are very big business man even heroine father also used to work with them, heroine brother and hero sister both love each other at first hero sister family will reluctant for this marriage but hero will convince them because he know heroine brother is very capable so their marriage will happen but heroine sister in law doesn't like her even heroine doesn't like hero because they will not treat her well heroine sister in law want her husband attention only for her so hero ask heroine to stay away from her brother this will make heroine very angry and in hero house heroine will be insulted for her poor state after some twists its revealed that heroine is not their own child she is adopted by them after her fathers death heroine mother married heroine father against their family because heroine father is an orphan but after their marriage the adopted family and her own parents will family friend even father also worked with hero father only but due to some problem heroine father has been murdered in the name of accident after that heroine mother will gave birth to her. Because of this heroine mothers family will take away her mother with them and married her to another man he doesn't want heroine so this family will adopt heroine like this the plot will go can anyone tell the name please