Jennifer Mally's attorney describes his client as a compassionate, caring human being.

Investigators believe she's a sexual predator.

In a just-released police report, we learn that days after her arrest earlier this month for an alleged sexual relationship with a 16-year-old student, an 18-year-old student at Paradise Valley High School talked to police.

He said he tried to talk to Mally about "girlfriend problems," but she "got upset" and told him it was socially unacceptable to talk to a teacher about that.

Then, he said, a couple of months later he was at her place when her husband was out of town and they had sex twice.

Mally's attorney said he spoke with that teenager.

We talked to her attorney, Mel McDonald, on the phone.

"There was no peep of the allegation," McDonald said. "And I spoke to him. There was no peep to the allegation that we later found out was in the police report."

McDonald said he's told Mally not to speak with any of her students. Instead, he's been talking to them.

"I've received really an outpouring of love from people who knew her, who worked with her," he said. "She's a wonderful, wonderful, young woman."

McDonald calls this latest allegation bizarre and he said Mally's side of the story will come out in court.

But something else is coming out in this police report -- a letter police say Mally wrote to the 16-year-old student she's accused of having a sexual relationship with.

It reads, "What would I do if I never had you in class? Die the saddest death and refuse to teach -- that's what!"

Police say she went on to write, "I feel pretty honored that you trust me with your highly-classified information and I am refusing to acknowledge that you won't be in my class next year. Wait, who am I trying to kid? You will be here daily."

Mally told a judge Monday that she's not guilty.

If the teen was in fact 18 years old when the two allegedly had sex, Mally, police say, would not face criminal charges.

Mally is set to be in court this summer.