Looking for a book I started, but didn’t have time to finish in the early 90s. Part of a sci-fi/ fantasy module in school where we picked books from a decent size list. The Tripod series and “Girl With Silver Eyes” were included. This book was about a girl who goes looking for her mother. Towards the beginning I remember she escapes through the city’s sewer system. She was told her mother had died, but found out that wasn’t true. The title might have something to do with the word “moon”. It was a dystopian setting, I think.
Lost Classics of Teen Lit: Name That Book! 