I think the goons were backup. Remember, she was on the phone with Edgar and was just about to unlock her car door when he told her about the car bomb attack on Tony and Michelle. Maybe there were goons at each location, and they weren't needed at Tony and Michelle's because they thought both were dead.
When Chloe got the word that she was a target, too, she looked around, saw the goons and started running.
The big question is now, who does Chloe give her car keys to?