The two-beat sequence: explosive anger or accusation, then panicked clinging once the rupture seems real. The rage is the surface; the abandonment terror underneath is the engine.
She tells you to leave and means it. You start to. She blocks the door, crying, begging you to stay. The same person, sincerely, in five minutes. The rage was real; the panic that followed was also real. They were both about the same underlying fear.