Sensing his mother's fright, Christian grabs Zwetta's hand and drags her forcefully towards the exit leaving everyone who looks so affected by Zwetta's words.
"Let go..."
"Shut up!" For the first time, Christian snaps at Zwetta. Seeing the paleness of his mother's face makes Christian have the courage to speak like that to Zwetta. "I'll let you go outside."
Zwetta could have easily let go of Christian's grip on her wrist, but Zwetta chose not to. Zwetta wants to know what Christian can do to her.
As he had said earlier, Christian finally released his hand from Zwetta's wrist as soon as they arrived at the park which was near the helipad. Christian deliberately invites Zwetta to the place to maintain privacy, so that no one can hear his conversation with Zwetta.