Indian-origin businessman Kushalen Naidoo, 28, was shot dead on Tuesday by unknown gunmen as he waited for his wife Farzaana who was attending evening classes as a psychology student.
The childhood sweethearts were married just two years ago. Farzaana killed herself with a gun from Naidoo's prized collection on Thursday, moments after excusing herself as the family prepared for his funeral rites in Pretoria. The funeral of the couple will be held on Friday.
Family members said the overwrought Farzaana could not bear the thought of a life without her husband.
Minutes after she excused herself to go to the bathroom, Farzaana shot herself in the head after she locked herself in her room. The police continue to investigate both incidents.