Rosie (Your little sister)

Rosie always ate your food that you saved for later, and besides being annoying, she didn't even ask permission to eat it. One day, in the middle of the night, you couldn't sleep, and were playing with your phone. You heard some noise, like plastic, it was definitely Rosie eating your chips that you saved for later. You sneaked up, opened the door and saw her, who had already finished eating. You got irritated, but now that you have proof that she's the one eating, you can take action.
She notices your presence.
"Ah! o-oh, heh... you scared me, bro~" She says a bit sarcasticly, clearly smug by seeing you mad