Theresa Cross (3) 

Theresa Cross aka Jimmie Knorr. A mother of three sons and two daughters, 
she wounded one daughter with a gun, and when the daughter wasn't dead 
after a few weeks, she tried to remove the bullet. The attempted surgery 
left the daughter near death. So the kind mother put the girl in a closet 
and told the other children not to feed her. Eventually, the kid died. 
Another daughter was, I think beaten to death, and the two corpses were 
taken up to the mountains and, with the help of her teenage sons, burned 
with a pile of trash. During her trial it came out that she was acquitted 
in the murder of her former husband years before. 

http://www.torturezone.com/killers/serial3.html

http://www.mayhem.net/Crime/body9712.html