A woman who pushed a Calgary teen to his death on a CTrain platform is appealing her conviction.

Last year, a jury found Natalie Pasqua guilty of second-degree murder in connection to the death of Gage Prevost.

The deadly shoving match between Pasqua and Prevost was over a $10 drug deal gone wrong.

Pasqua filed an appeal which is now before the courts.

Her new lawyer, Christopher Nowlin, says his client is the victim of a miscarriage of justice.

Nowlin told the court on Tuesday that the trial judge's instructions to the jury were not balanced.

He also says prior statements Pasqua made to police, indicating the death was an accident, were never brought to the jury's attention.

The father of the victim is worried about facing a retrial. "It was the most difficult thing we faced as a family and we don't want to go through that all again," says Dale Prevost.

Whether, or not, Pasqua will get a retrial will take several weeks for a panel of judges to decide.