Unfortunately, without more information, I can't determine the author of 'fall from grace a novel'. There are so many novels out there, and this one isn't widely known to me. You might search for it on literary websites or ask in a book - loving community.
I'm not sure exactly as I haven't read it. It could be about a character's moral or social decline, perhaps they lose their status in society, or their good reputation is ruined in some way.
It's hard to say for sure. It could be inspired by real-life situations but transformed and embellished for the sake of the narrative. Maybe some parts are true, while others are made up.
It's most likely fictional. Usually, when a story is titled like that, it's made up to engage and entertain rather than being based on real events. But sometimes, elements might draw inspiration from real-life situations, but not be a complete true story.
Well, it claims to be a true story. But sometimes in such cases, there could be some creative liberties taken for dramatic effect. However, the core elements are said to be rooted in reality.