An unexpected visitor

"Annie. Annie! ANNIE!" Someone was shaking me gently, trying to wake me up.
"Aah!" I yelled as I was jogged into full consciousness. I fell out of bed and looked around to see who it was visiting me. I turned around to see my sister. "Oh, it's you Sophie. Hi."
"Hello Annie, are you ok?"
"I've been better."
"What happened? The teachers just said that you'd tripped going up the stair and had bashed your head badly."
"I'm sure you won't believe me even if I tell you."
"Honestly Annie! If you say it was Luella, then you really need to grow up. She did nothing to you!"
"Really? Well I'll be sure to go and apologise to her then, for somehow, imagining that she was right behind me when someone hit me REALLY hard in the back of my head!"
"Annie, there is nothing wrong with Luella!"
"Just go away, Sophie. I'm not in the mood to talk."

((sorry for the shortness of this post, don't really have much time.))