I read a book in one day, with a nap in between, but it kept me up most of last night because I liked it so much.
It is The Nobodies Album by Carolyn Parkhurst. The writing is incredible, and the story is no less incredible. Plus, the protaganist is a writer and her latest book is a rewrite of all the endings of the books she'd written before...so you get short stories, the endings of the books the character got published with, with alternate endings, in between what she is going through in her real life.
Because you seem to have the same tastes in books, I thought you'd like this one. It was available in the new section of my library so I bet you can find it in yours.
I thought it was amazing.