Upon seeing Phoebe, Margaret who was still crouching near Dickson's body broke into a shriek and a sprint, taking everyone by surprise. When they saw the person she was running towards, they were not surprised.
What surprised them was Edward drawing a sword which forced Margaret to stop before she could lunge at Phoebe as she planned to do. This however did not stop the enraged woman from shouting her accusations.
"It's good that you brought yourself here, security curb her until the police gets here. This witch, I am more than certain that she killed my son, by the time they are done torturing you, you will mention all your accomplices." She shifted her eyes to David then Phillip.
It was not surprising that Margaret suspected Phoebe of killing her son, they were on terrible terms before he died.