Perinton, N.Y.-- She was endlessly positive. That is the way friends and loved ones of Heather Boyum describe her.
The 40-year-old mother of two was riding her bicycle on Route 250 in Penfield Sunday morning, when Monroe County Sheriff's Deputies say she was knocked off her bike by a Penfield man, then killed after being hit by a car driven by the man's girlfriend.
"[It] just seems unfathomable to me," said Eric Boyum, Heather's husband.
Twenty-two-year-old Mark Scerbo was charged with second degree manslaughter.
Deputies say he was rising recklessly prior to striking Boyum. His girlfriend, Megan Merkel, was arrested for Driving While Intoxicated.
"I wonder if they even understand what they took," said Heather Snyder, a friend of Boyum's and running club teammate.
Friends say they will always be impressed by the way Boyum lived her life to the fullest each day.
"She set really lofty goals for herself and went after them," said Snyder.
Boyum recently joined a running club and was a triathlete.
She was also a wife and mother of two young children.
"She was just an inspiration, no matter what it was," said Eric Boyum.
Beyond family and fun, Heather Boyum is remembered for her dedication to teaching. Boyum taught Advanced Placement courses at Fairport High School. The Dansville native worked for the school for ten years.
Boyum's calling hours are scheduled for Wednesday at Richard H. Keenan Funeral Home and funeral services will take place Thursday at St. John's of Rochester.