Thirty year-year-old Lebogang Monene was shot and killed at Tembisa hospital last week.
Her alleged killer turned the gun on himself, and is believed to be still in hospital.
Monene was a nurse at the Tembisa hospital since 2016.
Her ex-boyfriend entered the hospital using a state vehicle.
Eyewitnesses say the two argued at the parking lot before the shooting. The man also shot himself but is recovering in hospital. He faces a charge of murder.
Meanwhile, a five kilometer walk, prayer meeting and dialogue around gender based violence will take place in Tembisa, on Gauteng’s east rand on Saturday. This, a week after Monene was gunned down.
Tembisa is among the areas identified as a GBV crime hotspot in the country.
The event starts at 10am and will be attended by various government, faith based and community representatives.