Judias Buenoano

Buenoano poisoned two husbands and her son; when arsenic left the boy 
only partially paralyzed, she took him fishing and shoved him (he wore 
steel leg braces weighing 50 pounds) out of the boat. She then blew up 
her boyfriend in his car--the crime that led to her arrest. 

From the Kirkus review of the book: "Bodies of Evidence : 
The True Story of Judias Buenoano Florida's Serial Murderess"

http://www.amazon.com/exec/obidos/ASIN/0312928068/serialkillercent/104-4074935-4203167

http://www.geocities.com/trctl11/judi.html