Former Paralympic champion Pistorius left prison on Monday after spending a year behind bars for shooting dead his girlfriend Reeva Steenkamp on Valentine's Day 2013 in the South African capital Pretoria.
"I didn't want him to be thrown in jail and be suffering because I don't wish suffering on anyone and that's not going to bring Reeva back," June Steenkamp told pupils in a televised speech at a school in Port Elizabeth.
June Steenkamp was speaking at Reeva's old school. She read parts of a speech that Reeva had been preparing when she was killed.
Pistorius's parole conditions are reported to allow him to meet with June and Barry Steenkamp if they wish, but a Steenkamp family lawyer said there were no immediate plans for a meeting.
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Pistorius, 28, is due to spend the next four years of his five-year sentence living under strict parole conditions at his uncle's home in Pretoria.
Pistorius faces a further test at the Supreme Court on November 3 when prosecutors will appeal for a murder conviction and a tougher sentence that could see him jailed for at least 15 years.
June Steenkamp plans to launch the Reeva Steenkamp Foundation next year to campaign against violence against women.