Reina Hart: 2 books

After he died, Arjuna found himself in purgatory. Most people spend less than a year there, but he hasn't left for the past six. So now, they're bringing in a 'consultant' to help him move on. She makes him revisit his time on Earth, and remember the love of his life. Arjuna has to go back into memories he's forced himself to avoid, ever since death separated them.

It's high school now, and no one believes ghost stories anymore. They say that a betrayed girl can meet with Mercia, the ghost of the mail room, and ask her to take revenge. But no one thinks that she actually exists.When she curses junior Dor Roberts, though, he gets all the proof he needs.