Dausiya had last week, poisoned her husband, Usman and her half brother to death in Ungwar Dan Mayaki village, Bakori local government area of Katsina State.
She said she used the substance because she does not love him.
Dausiya Abdulmumini alongside other suspects arrested for various forms of crimes and criminal offence were paraded by the State Commissioner of Police, CP Besen Gwana at the police headquarters over the weekend.
Dausiya confessed to have murdered her husband, Usman, after adding poisoned substance in the dish she served him.
Her half brother, Muhammad Dasa also died after eating the left over poisoned meal.
However, her 23-year-old sister-in-law, Shafa’atu Usman, who ate three spoons of the dish, luckily survived the incident.
Dausiya said she committed the act because she was forced to marry Saminu whereas she was in love with someone else.