SOLVED. YA book about a girl who goes to another world and meets a boy who is half ghost. [s]

[Gwen]

I read this book sometime between 2007 and 2011. It was a young adult book and I think the edition I read had an orange and yellow cover but I might be wrong. The main character was girl about twelve or thirteen who starts in a big city, London or New York maybe. Somehow she ends up in another world where she meets a boy who is half human and half ghost. Part of this world saw populated by the dead but there were other places to with strange people and magic creatures.

[Gwen]

No, there wasn't much of a romance element. More fantasy adventure. But thank you.

[Kris]

Did the heroine have a companion from the real world - like a girlfriend in Un Lun Dun by China Miéville?

[Gwen]

That's the one, thank you so much!!!

[Kris]

You're welcome! Glad we could help.

I got lucky with a Google search -- site:www.amazon.com "fantasy" "young adult" "half ghost" world