Is This My Punishment? (1)

By the time Wu Yuan returned from his walk, the cottage house door was left wide open. He thought he closed it before leaving? 

He quickly went inside, and there was only one out of two people who were supposed to be inside. Where is the other one? 

"Where is she?" Wu Yuan stared down at the crazy granny sipping on her tea. 

"She left." The crazy granny shrugged like it wasn't a big deal. 

"What!?" Wu Yuan shouted, unable to control the volume of his voice. It was his first time yelling at the crazy granny, and he had his reasons why. 

"I said she left!" The crazy granny shouted back. She shook her head and tapped her left ear. "You need to get your hearing checking, Yuan." 

"How can you just let her leave!?" Wu Yuan had a feeling he shouldn't have left. He should've stayed and guarded the door.