Kaaron Warren 
Slights [EPUB ebook] 

When Stevie Searle almost dies in the accident that kills her mother, she doesn’t see a shining path or a golden light. Instead, she sees everyone she’s ever slighted, waiting to take a piece of her in a cold, dark room. The person whose place she took in the queue, the schoolmate she cheated off, the bus driver she didn’t pay? All waiting. All wanting to take their revenge when she finally crosses over. Stevie is fascinated by the dark room, so she sends herself there again. And again. And again.