Texas
Susan Basso 
Basso lured an older, retarded man (Louis "Buddy" Musso, 59, mental age 8) to Texas with the promise to marry him. Instead, she got him to make her his sole heir, then murdered him for his life insurance.
Additional info:
Linda Anita Carty 
In 2002 she was sentenced to die for the kidnapping and murder of her neighbor, apparently so she could take the woman's newborn baby as her own. The mother suffocated from being locked in the trunk of a car.
Additional information:
Cathy Lynn Henderson 
In 1994, Henderson kidnapped and murdered a 3-month-old boy while baby-sitting in Austin, Texas. She claimed his death was an accident, and says she had been planning to sell the baby.
Brittany Marlowe Holberg 
Crack addict who stabbed an 80 year old man 58 times, then shoved a lamp pole 6 inches down his throat while robbing him. Her defense consisted of "the battered-wife syndrome, post-traumatic stress disorder and a cocaine addiction".
Chelsea Richardson 
accused of killing her boyfriends parents.
Darlie Routier 
Devon, 6 years old and his brother Damon, 5 years old, were allegedly stabbed to death by their mother.
Erica Sheppard 
In 1993, Sheppard and her companion murdered a woman with a butcher knife and
a 10-pound statue in Houston, Texas, during an attempt to steal her car. She
asked that all appeals on her behalf be suspended, but just weeks before her
April 1998 execution date, the 24-year-old mother of three changed her mind.
She would have been the first black woman to be executed since 1976.
www.ericasheppard.com http://www.ericasheppard.com/
Kimberley McCarthy 
Accused of killing elderly neighbor