Guindon was murdered less than 24 hours after being sworn in as an officer for the Prince William County Police Department, law enforcement officials say.
Guindon's funeral was streamed live online Tuesday from the Hylton Memorial Chapel in Woodbridge, Virginia.
According to investigators, Guindon and two other police officers were shot by Ronald Hamilton, 32. The three cops arrived at the Hamilton home moments after the Army staff sergeant allegedly shot his 29-year-old wife Crystal to death.
Officers Jesse Hempen, 31, and David McKeown, 33, are expected to recover from injuries sustained in Saturday's shooting. Guindon died soon after being transported to a hospital for treatment.
Police say Hamilton was arrested at the scene of the murders, and he has since been charged
Source: Prince William County Police Dept / Facebook
'May We All Learn in Her Name to Wage Peace'Guindon will be buried next week in West Springfield, Massachusetts, in a cemetery plot located right next to her late father, officials say.
Hundreds of people shuffled into the church for Tuesday's service, which included a two-hour public viewing. Bagpipes greeted the arrival of Guindon’s casket.
Guindon was remembered Tuesday as a "bright" and "loving" woman with a keen sense of fashion. She was a former reservist with the Marine Corps, having served as a field radio operator.
She was also a pilot who earned a degree in aeronautical sciences from Embry-Riddle Aeronautical University in 2011.
Guindon worked as an intern with the Prince William County Police Department's Special Victims Unit and graduated from the academy in 2015, officials say.
"She accomplished more in 28 years than I could in 100," Prince William County Police Chief Stephan Hudson said during the service.
Hudson praised Guindon for her dedication to others, saying she was doing just that when she lost her life.
Father Gerard Creedon, who led Tuesday's service, recalled Guindon's love of dogs and birds. He said she was a voracious reader and an unapologetic dancer who was always planning her next trip.
"She was a police woman and a peace officer," Creedon said. "May we all learn in her name to wage peace."
Hamilton is being held without bail.