The British MPs family have visited the town where she was shot and stabbed
The sister of Jo Cox has called for "strength and solidarity" to honour the British MP's legacy.
Kim Leadbeater told hundreds of people in Birstall, West Yorkshire, that they should "focus on what which unites us and not which divides us."
She was speaking as Mrs Cox's family visited the town where she was shot and stabbed on Thursday afternoon while running a surgery in her constituency. The 41-year-old died a few hours after the attack.
Ms Leadbeater, who visited the site with parents Gordon and Jean Leadbeater and other family members, said her sister had remained positive, despite the abuse she sometimes received on social media.
She urged people to continue to speak out as they had since her death, saying: "Over the last 48 hours, people have not been silent."
"They have been vocal and passionate and have spoken from the heart. Genuine emotion with no hidden agenda. Jo would have loved it."
"We have to continue this strength and solidarity for the days, months and years to come as part of Jo's legacy. To focus on that which unites us and not which divides us."
Ms Leadbeater added: "For now, our family is broken but it will mend in time and we will never let Jo leave our lives."
"She will live on through all the good people in the world, through (husband) Brendan, through us and through her truly wonderful children, who will always know what an utterly amazing woman their mother was."
"She was a human being. She was perfect."
The words came as a memorial fund raised more than stg£500,000 (€636,000) for three charities that were close to Mrs Cox's heart - helping civilians caught up in the Syrian war, to fight racism and extremism in the UK and to help residents of her Batley and Spen constituency.
Prayers are expected to be said for Mrs Cox at church services around Britain today.
Bernard Kenny, (77) who was stabbed in the abdomen while trying to help Mrs Cox, remains in hospital with serious injuries.
Meanwhile, Thomas Mair (52) from Birstall, appeared at Westminster Magistrates' Court in London on Saturday charged with murder, grievous bodily harm, possession of a firearm with intent to commit an indictable offence and possession of an offensive weapon.
Mair, who gave his name as "death to traitors, freedom for Britain", was remanded in custody until June 20th, when his bail application at the Old Bailey will be heard.