Fox News [IMG] A teacher in Oklahoma was arrested after allegedly having a sexual relationship with a student. (Canadian County Jail) A. Mary Kay Fualaau is an American former schoolteacher who pleaded guilty in to two counts of felony second-degree rape of a child, her student, Vili Fualaau, who was 12 or 13 at the time. While awaiting sentencing, she gave birth to Fualaau's child. While imprisoned for child rape in May , she divorced her husband, and. Married teacher seduced year-old boy via text messages before The teen's stepmother reportedly grew suspicious after she said the boy.