The characters are all excellent, but the efforts of Steve to break through to the girls and Lou's complicated relationship with her sister were really the best parts. It's a busy book. In addition to the various challenges that each character faces in living together, there are some pretty serious topics raised, including alcoholism, co-dependency, and classism. Casey acts out the most, but Lou picks up a habit of stealing from family and friends (a problem which is never fully addressed).
While covering very little new ground, Zarr's story is well-written and a delight to read.