Sentencing arguments in the first-degree murder case of a Toronto teen convicted for her role in the slaying of Stefanie Rengel will take place in mid-May.

Justice Ian Nordheimer set the dates of May 13 and 14 for defence lawyer Marshall Sack and Crown prosecutor Robin Flumerfelt to make their arguments in the case of M.T.

Flumerfelt told Nordheimer on Monday that he wants M.T., who was 15 at the time of the New Year's Day 2008 murder, to be sentenced as an adult.

If Flumerfelt is successful, M.T. -- who can't be named under the provisions of the Youth Criminal Justice Act -- will face the following:

  • Life in prison
  • No possibility of parole for five to seven years
  • She could be publicly named

If sentenced as a youth, she would face a maximum 10-year sentence, with no more than six to be spent in custody and no more than four in the community under supervision. Her name would be forever kept from the public.

Court will resume on Wednesday over M.T. school and detention facility records. Those are to be made available to two psychiatrists evaluating M.T. for the court.

M.T. isn't convicted for playing a physical role in the stabbing death of Rengel -- someone she had never even met.

Instead, the jury convicted her after reviewing evidence she had pressured her boyfriend D.B. into killing Rengel, someone she considered a threat to their relationship. M.T. had essentially used sexual blackmail, saying if D.B. didn't kill her, they were just going to be friends, court heard.

D.B., now 19, faces his own first-degree murder trial this fall.

Rengel was stabbed very close to her East York home after someone lured her out of the house by calling her cellphone.

With files from The Canadian Press