Guerin, a mother of three, was riding with her daughter, 18-year-old Megan Rogers, through rural Ladner when it is believed a dog spooked her horse. The startled horse ran off and Guerin was unseated.
Her daughter’s horse followed the spooked animal, but ended up in a muddy ditch, which the horse was unable to clear.
Efforts to revive Guerin, including CPR, proved unsuccessful. Guerin suffered severe head injuries in the fall.
She was airlifted to Vancouver General Hospital but died late on Wednesday night.
Rogers was also taken to hospital for treatment to scrapes and bruising to her leg.
Firefighters were called to pull her horse from the ditch.
Canada.com reported that Kara Lingam, stable manager of Dogwood Stables, said the family had boarded their horses at her stables for the past few years.
She said Roseann Guerin had only recently bought the horse she was riding. The horse was young and considered “green.”