She then beelined to the third floor, where she found Brown, 36, Wilson, 47, and two other co-workers in a break room.
She instructed one to leave, saying she had no quarrel with her. Then, according to police, she began blasting away.
She allegedly shot Brown once in the head at close range and Wilson in the side. And she allegedly shot Bryant Dalton, 39, who'd also been involved in the earlier argument, in the neck.
She then hunted down her supervisor in a third-floor hallway and allegedly fired at him but missed.
She also allegedly fired at and missed a heroic Kraft mechanic who followed Hiller, shouting at co-workers to flee and reporting her movements on a cell phone to a 9-1-1 operator and on his walkie-talkie to other employees.
She also fired once at the first officers on the scene, Homicide Capt. James Clark said.
Hiller then hid in a darkened, second-floor office and called 9-1-1, unaware that seven co-workers had cowered in fear in an adjoining room.
" 'I'm the person you're looking for at the Kraft Nabisco building,' " Hiller said to a dispatcher, according to Cpl. Janice Leader.
Leader, a 9-1-1 supervisor, then got on the phone. " 'So, now you want to help me?' " an agitated Hiller said, according to Leader. " 'Now you want to help me?' "
Leader said she spent about 40 minutes on the phone and told Hiller that police were on their way to the room. "I told her, 'Put the gun down. Put the gun down. And put your hands on top of your head so they'll know you're not being aggressive to them,' " Leader said.
SWAT officers stormed the building, apprehended Hiller and freed the hiding co-workers at 9:36 p.m., about 40 minutes after the shooting rampage began.
