"What?" Penny gasped in utter horror, the pieces falling together all once as she whirled on Gen - or what appeared to be Gen. Suddenly, it didn't quite look like Gen any longer and it began to waver. "No!" Penny cried out with an unexpected burst of anger, anger that gave her courage she wouldn't ordinarily have. Her hand darted out toward the creature that bore her sister's face and she grasped it by the wrist as hard as she could. It writhed and tried to free itself but to no avail.
It was rare that Penny was angry but after the events in town with Matt and being tricked by some monster, she was furious, at the creature for impersonating her sister but more at herself for falling for it. After all, she should have known better; she was acting nothing like Gen would have.
"How dare you!" she hissed at the creature, who only struggled further to get away.