She did, what?

Penny didn't mean to eat the last bag of chocolate in the fridge last night. However, resolving an issue for over an hour while standing up and with her arms over the desk that was almost above her chest was tiring. She could still feel her arms ache.

Those chocolates were Slater's, and she knew he was saving them for special occasions, but she ate them anyway. 

Just as Penny prepared herself from Slater's wrath, she saw everyone gazing down at her pajamas. 

It was a printed duck pajama!

"Penny… it really is you. When I went to get some water last night, I saw you enter Uncle Haines's study room." Nina's meek voice snapped everyone back to their senses. "You should apologize to Uncle Haines because it seemed you deleted an important file from his computer. I know you're new here, but you shouldn't touch important stuff."