Police said Haripriya, who had completed B.Tech in a private college and got a placement in a private firm, wanted to continue her study and do M.Tech abroad.
However, her father, Rajendran reportedly told her that being their only daughter, they did not want live without her and asked her to join the firm yesterday, police said.
Dejected over this, Haripriya allegedly consumed poison in her house at Masakalipalayam last night and fell unconscious.
Seeing this, her mother also allegedly consumed poison.
However, Haripriya died on way to hospital, while her mother was still in a critical condition, police added.