Heyer, 32, was protesting the rally in Charlottesville on Saturday when James Alex Fields Jr, of Maumee, Ohio, allegedly plowed his vehicle into the crowd, killing her and injuring 19 others.
Fields Jr, who is being held at the Albemarle-Charlottesville Regional Jail, has since been charged with second-degree murder.
'She died doing what was right. My heart is broken, but I am forever proud of her,' Heyer's mother, who has not been named, wrote on a GoFundMe Page set up for the family.
Heyer has been hailed as a 'hero' online after she was killed standing up to racism.