In the days before she hanged herself from a beam in the basement of her third foster home, a 15-year-old southern Alberta girl told her sisters and ex-boyfriend that life was no longer worth living.

She held a sharp blade to her wrists and said she "couldn't take it anymore," and later said her death would happen when no one was around to stop her, according to a fatality inquiry report made public Thursday.

Young people need to understand the signs of suicide and depression and be taught in schools to take seriously threats such as those made by the teen, Justice Marlene Graham wrote in the report. The girl, who can't be identified because she died while in care of the province, is called "D" in the report.

"The most proximate factor in relation to D's suicide was the lack of effective action taken by the young people surrounding her in response to her stated intention to take her own life," she wrote.

Schools across Alberta should take part in World Suicide Prevention Day on Sept. 10 in order to provide a "meaningful learning opportunity for students and their families," Graham recommends.

People of all ages need to understand the classic warning signs shown by someone thinking of suicide, to take those threats seriously and to get them help, she says.

It's not unusual for people to feel uncomfortable when someone they know talks about taking their life, said Tim Wall, executive director of the Canadian Association of Suicide Prevention.

"I think it's still an issue that is not much talked about, that creates a certain degree of discomfort for people, and we need to be doing a lot more talking about the issue and raising public awareness on what is a major public health problem in Canada."

While participating in a suicide awareness day in schools could help, he said more education is needed across the board. Everyone, whether young or adult or senior, needs to better understand the warning signs of suicide and depression and be willing to talk about the subject openly.

In foster care since birth

D's mother was a chronic user of drugs and alcohol, and D was placed in foster care on the Siksika Nation, about an hour east of Calgary, within three days of her birth, according to the fatality report.

She spent her life in three different foster homes, interspersed with three separate unsuccessful attempts at adoption before she turned six.

When she killed herself on Jan 2, 2006, she had not seen a psychologist since the summer of 2004, despite recommendations from her last therapist that she be seen once a month, wrote Graham.

Child welfare officials should make sure that when a mental health professional says ongoing counselling is needed for a child in care, that it is followed up immediately, Graham recommended.

Any foster child who has been identified as "emotionally vulnerable" should also be monitored by professionals, especially when they're "engaging in risky behaviours," she wrote.

"This is particularly relevant in the case of aboriginal youths, who are at high risk for suicide," she wrote, referencing statistics that show aboriginal people between the ages of 10 and 29 who live on reserves are five to six times more likely to commit suicide than their peers.