My sister is a ghost

I know this sounds really weird and there is no way you guys are going to believe this.
Someone called my cellphone pretending to be my sister. She asked if I wanted to go hang with her. I knew it was fake, because my sister is dead, but it sounded so much like her. I said yes and told her to come up to my apartment. I knew this was some sick prank, but I just wanted to see who could do this to me. So when the door of the elevator opened and nobody was there I was disappointed but also relieved. Relieved because I didn't have to face them and get made fun of for my sisters dead. I din't know anyone who would do such a thing though. Not in this town at least. Maybe it were people from my old town Sunset Valley who found out about my sisters dead, I thought.
I closed the door behind me and went to my room. 'Damian?' I heard my sisters voice say. I jumped up. Were these pranksters inside my house? Then I saw it. It wasn't very clear, but it was my sister. It was really her. I cried tears of happiness and hugged her. It isn't like you see in those ghost movies were you go straight trough the ghost. I could actually touch her and hold her. I told my dad, but of course he didn't believe me. Until he saw her himself. He cried in happiness as well.
I asked her about mom. She said she saw her, but she went to heaven. Krista, my sister, didn't want to go yet. She was going to wait till we all were dead, so we could go to heaven together. She did see my mom and grandma sometimes and she said they were doing great.
My sister was also going to get her old job back and she was going back to school. Apparently she has some ghost powers. I'm not exactly sure what they do yet, but I think it makes people not weirded out by her or something.
I know this story is quite unbelievable, but I have proof. I took this picture with my sister together and to my surprise she showed up in the picture. You can see her even more clear than in real life.