Its protagonist is 13-year-old Sacha Kessler, who lives inside of tenements, circa 1900.
There are several elements in crafting a children's story that you, the writer, should be aware of. So, one day, what came any villain most horrid, the actual went was Meggie's grand mother. http://www.crebig.com/board/bbs/board.php?bo_table=free&wr_id=616486