Mandela-Hlongwane is said to have agreed to arrange a boxing match between Floyd Mayweather and Manny Pacquiao to coincide with her father's birthday in 2011. The match did not take place and the boxing promoter Duane Moody sued successfully for a US court to order that she pay $4.7m, plus costs, in damages to Moody. Mandela-Hlongwane was expected to appeal. In 2014 she was reported to be South Africa's ambassador to Denmark. She first arrived in Denmark in June 2015. Zindzi has been married twice and has four children: Zoleka Mandela, (1980), Zondwa Mandela (1985), Bambatha Mandela (1989) and Zwelabo Mandela (1992). Her first husband was Zwelibanzi Hlongwane. She married her second husband, Molapo Motlhajwa, who was a member of the South African National Defence Force, in March 2013. In June 2019, while ambassador to Denmark, Mandela's Twitter account sent a series of increasingly strongly worded Tweets, where she discussed "trembling white cowards who are the thieving rapist descendants of Van Riebeck [sic]", and "uninvited visitors who don't want to leave" that caused significant controversy. Mandela-Hlongwane had previously that month expressed her "deep, pure unconditional love and respect" for "CIC" (leader) of the Economic Freedom Fighters(EFF), Julius Malema. While being investigated by the Department of International Relations and Cooperation (DIRCO) for breaching their social media policy, Mandela remained defiant, Tweeting that "I am not accountable to any white man or woman for my personal views. No missus or baas here. Get over yourselves #OurLand". She was ordered by foreign minister Naledi Pandor to "conduct herself as a diplomat" and to adhere to the department's social media policy, and concern about her views was expressed by former president Thabo Mbeki, and her views were described as hate speech by ANC veteran Mavuso Msimang, while her opinions drew support from the EFF and the Premier of KwaZulu-Natal Sihle Zikalala. Her Tweets came close to the end of her four-year term as ambassador to Denmark.