A pub owned by Steenkamp's father, Barry, in the South African city of Port Elizabeth was closed on Friday.
Beth Butler, owner of another bar in Port Elizabeth, said Valentine's Day was a particularly sad occasion for any parent to lose a child.
On Wednesday, the spokeswoman for Pistorius said he reached a settlement with a woman over an alleged assault case from 2009 because his lawyers advised him he could not fight civil and criminal legal battles at the same time. He was arrested and accused of causing an injury to Cassidy Taylor-Memmory, a guest at a party at his house five years ago, after allegedly slamming a door and then punching it.
Pistorius was the first double-amputee to run at the world championships and the Olympics. He faces a possible life sentence with a minimum of 25 years in prison before the chance of parole if he is convicted of premeditated murder in Steenkamp's killing.
A judge will deliver a verdict. There is no trial by jury in South Africa.