Reeva's uncle, Michael Steenkamp, broke down in tears when describing to reporters what a close-knit family she belonged to and how all of her relatives had been due to celebrate Christmas together.
He said that Reeva had spoken about her desire to become an activist fighting abuse against women in the months before her death.
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The Crown Prosecution Service is to announce its decision later on whether individuals and organisations will face criminal charges.
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Talks at Stormont aimed at restoring power-sharing have adjourned with little sign of the DUP and Sinn Fein reaching an agreement.