If This is Paradise, I Want My Money Back

Charlotte is hovering between life and death, but it's taken a coma for her to realize she's made a complete mess of her short time on earth. Not to mention the five precious dating years she's just wasted on the cheating, faithless James Kane. But after a quick peek at the afterlife, she decides it's not all it's cracked up to be either. Kind of like a big retirement home in the sky, with an awful lot of bingo and bridge and absolutely no sign of Elvis/Princess Di/Kurt Cobain or anyone it would actually be nice to spend eternity with. So when Charlotte is offered a chance to go back to Earth, this time as a bonafide angel, she jumps at it.
But there's a catch. The person she's assigned to watch over is . . . a certain James Kane. Which is where the fun really starts. Well, just because she's passed on doesn't necessarily mean she's moved on, does it?