Dineo Motapane is one of nine recent victims whose deaths have left a nation traumatised over the level of violence against women.
Former France international Patrick Vieira, a World Cup winner in 1998, says taking charge of Senegal, the nation of his birth, is an "honour".
Chan Mathok Atak has been sentenced to two years and three months in prison after piloting the boat.
Police reportedly fired into the air on Friday morning as they struggled to contain crowds jostling to secure a place at the tented site.
The mother of two young children was kidnapped last week in the middle of the day in the main city, Blantyre.
Authorities linked the deaths to disease, but the official explanation has been disputed by intelligence reports and relatives of the accused.
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