Oscar Pistorius' Girlfriend Set to Give Speech on Abuse ... Day She Was Killed

Oscar Pistorius' GF Reeva Steenkamp was supposed to give a speech on the hardships of abusive relationships on Feb. 14th -- the same day she was shot dead in her boyfriend's home.

Reeva was set to speak to a group of teenagers at Sandown High School in South Africa ... to talk about her own experience suffered at the hands of a previous boyfriend -- not Oscar -- this according to the Daily Telegraph.

In the notes for her speech, the former model reportedly urged the school kids to "be brave, always see the positive" and "make your voice heard."