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Mark Stodghill, Duluth News Tribune , Published February 08 2012

Duluth woman pleads guilty to stabbing sister in the face

DULUTH, Minn. - A Duluth woman accused of stabbing her sister in the face with a piece of wood when she said she woke up and found her boyfriend and her sister sleeping together pleaded guilty Tuesday to third-degree assault.

Stephanie Lynn Mattinas entered the plea before Judge John DeSanto is St. Louis County District Court. She will be sentenced on March 16.

Mattinas told police that the fight started when she “snaked out’’ after seeing her sister and boyfriend together and began to attack both. She was accused of assaulting her sister with an 8-inch wood molding fragment and beating her boyfriend with a baseball bat in an incident reported about 4 p.m., a year ago today on the 100 block of West Fourth Street.

Police were dispatched to the address on a report of two females fighting in an upstairs apartment. A man who lived an apartment below said the fight caused pictures and other items to be knocked off his walls.

A responding officer found broken bottles and glass all over the living room floor where part of the fight took place. A bedroom door appeared to have been kicked off its hinges. The 24-year-old sister of the defendant was found on the floor with her face covered in blood. She had a large stab wound on her left cheek with what appeared to be a piece of trim board, about 8 inches long, sticking out of her face.

The victim said she was beaten by her sister. She said she was punched about 15 times with a closed fist and then stabbed with the piece of wood. She was transported by ambulance to Essentia Health St. Mary’s Medical Center, where the wood had to be surgically removed.

An officer reported that Mattinas took a preliminary breath test and had a blood-alcohol level of more than three times the legal limit to drive.

St. Louis County prosecutor Kristen Swanson said that as part of the plea agreement, the defendant will pay restitution to the victims and receive a stay of imposition of her sentence if recommended by the Arrowhead Regional Corrections probation officer.