Wenny has wings

I'm reading this story so I don't know the end. It's a story about Wenny's sister writing a letter or diary to Wenny. They were walking in the road and got an accident. Wenny and her sister died so they were flying up the sky through dark tunnels where the light was showing at the end. But because of that stupid doctor pressing electricity thingy on Wenny's sister's heart, She had to live. She said that it was totally unfair that Wenny has got to live in that lovely heaven and she has got to live in that stinky world with pain in her body. Everyday she writes a letter to wenny.

I like this story very much, and Mr Pollicutt, it's creepy!!

I think most of you would know this story.