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 slump will spark scrutiny, especially as statistics show a rise in racially or religiously motivated offences following the EU vote.
The 53-year-old was killed shortly after leaving her home in Mosta, Prime Minister Joseph Muscat said.
Jordi Sanchez of the Catalan National Assembly and Jordi Cuixart of the Omnium Cultural group were jailed on Monday.