She was a paralegal with the Miller Law Group.
Ms. Heyer lived alone with her Chihuahua, Violet, who was named after her favorite color. 
On August 12, 2017, during the Unite the Right rally in Charlottesville, Virginia, Heyer died and 19 others were injured when a Dodge Challenger driven by James Alex Fields Jr. rammed a crowd of counter protesters gathered to oppose the rally of white nationalist and other right-wing groups.  
Marissa Blair, a friend of Heather Heyer who was at the incident, said, “We were just marching around, spreading love —and then the accident happened. In a split second, you see a car, and you see bodies flying.”
Heyer's mom, Susan Bro, refused a phone call from President Donald Trump offering his condolences. Bro said: “I’m not talking to the President now. I’m sorry. After what he said about my child—and it’s not that I saw somebody else’s tweets about him. I saw an actual clip of him at a press conference equating the protesters like Ms. Heyer with the KKK and the white supremacists.”