The Mother Of The Year

A woman decided to kill her husband because she hated him. Then she decided to kill her son because he was a pest. Then she almost succeeded at killing the daughter because she wouldn't get a job to pay for her student loans.

Diane Staudte admitted to using antifreeze to accomplish her missions. She got the idea from the internet. But then fate deals a twist to the formula, as the mother rats the daughter as an accomplice!