Sabrina started Finest Matches after she married Drake and worked hard to the business a success. When one of her client's found out that her husband's property business was a ponzi scheme, she killed him and tried to pin the murder onto another client, but Catherine was able to deduce that Sabrina had recently been in the dead guy's apartment from a previous conversation they had, and that she had motive to kill him.
However, Catherine did not have any solid evidence to hold Sabrina, however, she did have enough evidence to hold her husband on fraud charges, which brought Sabrina's world crashing down.
Enraged, Sabrina ran Catherine off the road and pulled a gun on her. Catherine then pulled her gun and they both fired at once. Catherine survived the shooting, Sabrina however, died at scene.