Interestingly, this makes me think of Attack on Titan! The first scene of the anime, if I'm not mistaken.
Where Eren is lying in the grass under a tree. Nooot sure why, but that tree (combined with the non-Titan-sized wall) makes me think of that scene.
Err... Yeah.

What sort of books does Cosette like to read?
(inb4 books about uprising, rebellion and war)

I'm liking the angle here. That curvature makes it all seem like a small world (maybe also what reminds me of AoT subconsciously?) as if she's just completely absorbed in her own. Just her own private space as she's reading a book

Hm, I can see it! I certainly wasn't thinking about it at the time, but I can see the resemblance! Great scenes in that anime, I'm rather flattered to be compared to it!

She does like those kind of books too, but she probably also enjoys epic stories, poetry, literary classics, maybe the occasional religious text! She'll read almost anything when bored though, except romance

Thanks!! I like when a piece makes those kind of implications, it's very special to me when art can inspire such suggestions!

Very nice. I like how the expression on her face is that level of dull that your face only gets to when you're truly absorbed in something

Thanks! I usually draw her looking so intense, I thought this was a good change of pace!