Staff at a long-term care home in Woodstock had serious concerns about a nurse now charged with murder in connection with the deaths of eight elderly people, an anonymous letter obtained Thursday claims.

The letter, allegedly from a concerned employee from Caressant Care where the accused nurse was once employed, was obtained by CTV News.

On Tuesday, 49-year-old Woodstock resident Elizabeth (Bethe) Tracey Mae Wettlaufer was charged with eight counts of first-degree murder in connection with the deaths of seven patients at Caressant Care, and one patient at Meadow Park long-term care facility in London.

Police allege that the eight nursing home residents were killed over a seven-year period spanning from 2007 to 2014.

According to the letter, Wettlaufer had a “long list of disciplines,” and that “concerns of her nursing care” had been reported with “nothing done.”

A retired nurse and former colleague of Wettlaufer said she remembered when the accused was dismissed.

“I didn't really hear any reasons why, other than some performance issues, I think there were at that time, but I didn't know any specific details of them all,” Rosalynd Sim said Thursday.

Sim said news of the charges earlier this week came as a shock.

“She was a very nice, kind nurse, well-liked by the residents and staff," she said.

One of Wettlaufer’s neighbours described a conversation with her where she discussed her career.

"I asked her, you've gone through a few jobs lately,” Wade Messenger told CTV Toronto Thursday.

“She says, ‘Yeah, I got fired from one job for stealing medication, and the other job I got fired for because I was under the...she says, I was high and gave the patient the wrong medication, he almost died,’ and I couldn't believe my ears."

Messenger said he had a conversation with Wettlaufer about a month ago “about the different stuff she was taking,” including Percocet, Oxycontin, and morphine.

“You name it, it was a whole gamut," he said.

The developments Thursday come just a day after sources told CTV Toronto that police had first been alerted to the alleged murders after Wettlaufer had a conversation with someone at Toronto’s Centre for Addiction and Mental Health.

Wettlaufer was seeking treatment at the facility in September. It was a conversation with someone there that prompted staff to contact police, the sources said Wednesday.

Toronto’s homicide unit ultimately turned the information over to investigators in Woodstock, and Wettlaufer was arrested Monday night, the sources said.

During a news conference in Woodstock on Tuesday, police said the victims died after the nurse allegedly “administered a drug.”

Court records show Wettlaufer had signed a peace bond in early October. It reveals that she was seeking treatment at CAMH and was attending Alcoholics Anonymous meetings.

The terms of the peace bond imposed a curfew on her and banned her from possessing any alcohol, weapons, insulin, medication or any drug unless they were specifically prescribed by a physician for her. The peace bond also dictates that she not provide services as a caregiver and does not attend any kind of care facility unless for her own personal health issues.

Wettlaufer moved in with her parents recently after a second stint in rehab, a neighbour who didn’t want to be identified said. Wettlaufer told the neighbour she had a problem with drugs and she was now under a court-imposed curfew.

On Facebook, Wettlaufer had posted a poem about her sobriety in September 2015, noting she had been clean for a year.

She also noted in November 2015 that she had become a pediatric nurse.

“Who’d have predicted that?” she wrote.

A search on the College of Nurses of Ontario website shows a status of “resigned” as of Sept. 30, 2016. The CNO said they were looking into whether Wettlaufer resigned her registration or whether it was taken away from her.

Her father spoke to CTV Kitchener briefly Wednesday, describing his daughter as a kind, caring and considerate woman. He noted the family was going through a troubling time and that they had been advised not to speak to the media by their lawyer.

His wife refused to speak with the reporter at the scene.