Mothers once thought of her as a friend; a teacher they could trust. But she betrayed that trust, and violated their boys.

Jamila Love Williams , a former algebra teacher at a Michigan high school, will spend eight to 15 years in prison for her illicit affairs with four teenage students.

The mothers of her victims — who were between 15 and 16 years old at the time of the sex assaults — had bitter words for Williams, 36, at a court hearing in Grand Rapids, Mich. on Oct. 15.

“You are a sick, sadistic child molester. You don’t deserve to be in society. You are a predator,” one mother said, according to Michigan Live. “You befriended all of us mothers while in the back of your head, you wanted [the boys] sexually.”

Williams was charged in June  with three counts of third-degree criminal sexual conduct and one count of second-degree criminal sexual conduct. She pleaded no contest to all four charges in September.

According to Grand Rapids police, Williams had sex with the victims in a variety of locations: in a car, at a Golden Corral restaurant, in an alley, and in at least one boy’s home. One mother claimed the teacher even had sex with her son in a locked classroom at Grand Rapids University Prep Academy, where Williams taught for six years.

At her sentencing, Williams apologized for her behavior, but insisted that she is “not a predator.”

“I did not prey on these young men,” she said, according to Michigan Live.

It was initially thought that Williams only had affairs with two students , but additional victims came forward during the police investigation.

According to WZZM, Williams is herself a mother of four children, ages 3 to 19 , and is stepmother to a pair of 16-year-old twins.

Now she’s not allowed to have unsupervised contact with children younger than 16, and must register as a sex offender.

Read more: Huffington Post