Zenani, who struggled to hold back tears while speaking at Madikizela-Mandela's funeral at the Orlando Stadium in Soweto, Johannesburg, lambasted the media for "peddling lies" about her mother and her contribution to the struggle, and only tell the truth when she was dead.
The party says it's important to remember the struggle icon's message.
Mama Winnie was laid to rest on Saturday.
"Praising her now shows us what hypocrites you are!"The pain inflicted on her lives on in us".
Duarte described Madikizela-Mandela as a caring mother who suffered more than anyone could have imagined when she was incarcerated and exiled by the apartheid regime. "It is so disappointing to see how they withheld their words during my mother's lifetime, knowing very well what they would have meant to her", said Mandela-Dlamini. They could not break her.
The afternoon burial ceremony at Fourways Memorial Park Cemetery, north of Johannesburg, ended a almost two-week mourning period declared by the government.
"My sisters, since she was unable to come and receive her award, I'd like to invite you that you can come to Namibia so that we can give you that honour, and also allow us as Swapo and Namibia to also honour her", Geingob said during his speech at Madikizela-Mandela's funeral.
A close friend, Mrs Mokgobo, spoke about how Mama Winnie had impacted her life and those of black social workers in the country.
The state-owned New Era reported in early April that Swapo Party Women's Council secretary Eunice Ipinge had said "plans are underway to name a street in honour of Winnie Madikizela-Mandela as per President Hage Geingob's directive in 2015".
"She should be embraced as such because even years after we are gone, our children will also recognise her as such".
From the very start of the official programme, some of the people who filled the 40 000 capacity stadium made their views known - booing former presidents Thabo Mbeki and Jacob Zuma when their presence was announced at the funeral.Although only a few booed Mbeki, loud and drawn out booing was reserved for Zuma, who stepped down as the country's head of state in February.Most of the EFF supporters left the stadium following a blistering tribute to the liberation hero by their commander in chief, Julius Malema.
For husband and wife, it was a crowning moment that led four years later to the end of centuries of white domination when Mandela became South Africa's first black president.