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A grieving Alberta mother is worried the law may not be on her son's side after all.
It's apparently coming down to a margin of error.
For Sheila Krueger, the dreaded knock came earlier this year on a cold February night.
Her 21-year-old son Ryan Haniak was dead - - run over in the parking lot of a restaurant on the southern edge of Edmonton.
And struggling through her pain, Sheila began to turn her attention to the person behind the wheel that night.
"The arresting officer felt that the driver was drunk so she arrested him right away," exclaimed Sheila.
Sheila says she was told the driver blew .091 and .085 later that night.
But she would then learn something else she did not know.
"They throw the highest reading out, and they take 10 percent off the lowest reading."
Suddenly, the driver accused of killing her son is under the legal limit after allegedly blowing over it.
Sheila says to make matters worse, she's been told the breathalyzer machines are also factoring in a 10 percent margin of error.
She say the prosecutor has told them he does not think it's a winnable case, but her family still has one shot left.
"By us pursuing the police, now it's getting sent to the Chief Crown Prosecutor." (td)