Through thick and thin (Katelyn Hollow X Severus Snape) (HP fanfic)

Chapter 14 Katelyn POV (Katelyn's dream)

I was in a dark room. Then I heard a whoosh behind me. I spun around. Nothing.
"Who is there", I asked. Then something grazed down my spin. I stiffened up and spun around with my wand out. No one was there. Then everything faded away. I was in Hogwarts. I walked through the halls and down to the dungeons. Then I went into Severus's office. I saw him sitting at his desk upset.
"Why did this happen to her...bloody hell! She didn't deserve to die", he said beating his desk. Then he pulled out a fire whiskey.
"What do you mean", I asked. He didn't hear me.
"Oh, Katelyn why did he have to kill you", he asked.
"Severus I am here", I said.
"Why did you leave me here", he asked.
"Why don't you see me", I asked. Then Dumbledore came in and walked straight through me.
"Severus, you need to let her go", Dumbledore said.
"Albus", I said, "WHY CAN'T ANYONE SEE ME?!"
"But I can't", Severus said. I was annoyed now. I picked up a piece of chalk and wrote on the desk I am here.
"What", Severus asked confused. I wrote more. Who killed me?
"Who is there", he asked. Katelyn. Then Dumbledore saw the writing. Who killed me, Severus?
"She can't really be here", he said, "someone is just pulling a mean prank." This isn't a prank Severus Snape...If it was then how would I know that you speak fluent German but you aren't German or that you and Albus are the only ones who know my deepest darkest secret.
"It is her", Albus said. I had enough energy and made myself appear.
"Danke, Albus for believing me", I said. Severus spun around and saw a ghost me.
"Who killed me", I asked.
"Your brother", Severus said.
"What? He would never", I said but I knew he would. I cried and felt someone shaking me and calling my name. Then I woke up.