A forensic psychiatrist says the 17-year-old girl convicted of Stefanie Rengel’s murder could develop a personality disorder resembling Glenn Close’s character in the movie Fatal Attraction.

Dr. Philip Klassen told a sentencing hearing yesterday that the girl, known as M.T., has issues with jealousy and anger and is more self-pitying than remorseful.

In his report filed with the Toronto court, Klassen writes that if her psychological presentation continues into adulthood she could evolve into a person with a “highly functioning” borderline personality organization.

Rengel was stabbed six times and left to die in a snowbank outside her home on New Year’s Day 2008.

The Crown successfully argued that M.T., driven by jealousy, used sexual blackmail against her boyfriend, known only as D.B., to push him into killing the 14-year-old.

If sentenced as a youth, as the defence wants, she will face 10 years in custody.

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