I never knew exactly what a penny-packer did for a living, but now I do: she writes great stories for kids! This was a fun book for middle-graders. I haven't read any others in this series, but this one worked as a stand-alone. it was smart, inventive, and entertaining even for an adult reader because of Clementine's quirky take on her life and her interactions with everyone she encounters.
Clementine is apparently prone to get into trouble one way or another, and when she learns there is to be a family meeting at home one evening, she panics because she can't remember doing anything wrong lately and is mystified as to why a meeting should be in order. It turns out that the family is going to be welcoming a newcomer: mom is pregnant!
Naturally Clementine has issues with this, being perfectly happy with her four-square family. Adding a fifth to the mix knocks everything off kilter as far as she's concerned, and as if that wasn't bad enough, her rat has escaped - the one she was working with in a science experiment at school. And she;s lost her favorite winter hat - the one grandma knitted for her.
Marla Frazee's line drawing are great, and very evocative. Sometimes her perspective is a little off - Clementine seems to shrink to almost half her size when she goes to talk with her teacher one day at recess. That aside, I liked the drawings and the take on life shown here, as well as the well-written ending. I recommend this (and perhaps the others in the series too, if they're anything like this one).