Just finished reading this - it's an amazing story about an unsuccessful author who plagarises her dead friend's work and how things spiral out of control from there...
It's an excellent satire on the publishing industry and social media. The protagonist isn't an unreliable narrator exactly but she's absolutely persuading herself that what she's doing isn't outright plagarism and it's up to us how much we believe her on that... She's a strongly drawn character either way.
The literary envy aspect of the story reminded me of The Information by Martin Amis. I'd definitely recommend Yellowface anyway. Has anyone else read it?