I enjoyed 'The Measure' by 'Nikki Erlick'.
Admittedly there were a few times I started to waver over the repetitive themes and conversations. However, the characters are well written and the human reaction is believable.
The book is science fiction based, but outside of the first chapter's explanation of the strings' arrival and their meaning - the Sc-iFi elements cease and the rest of the book is an interesting story of cultural response and relationships.