Murder Can Stunt Your Growth(1996)
(The third book in the Desiree Shapiro series)
A novel by Selma Eichler
Ten-year-old Catherine wasn't expected to survive a life-threatening illness, so when she dies, everyone accepts that she succumbed to it. Everyone except Desiree Shapiro, who is convinced that the child was murdered.
Used availability for Selma Eichler's Murder Can Stunt Your Growth
May 2002 : USA Hardback
January 1996 : USA Mass Market Paperback