In this case, eye for an eye isn't even enough. Her suffering would end too soon. She should be tortured to death over a very long, protracted period of time.
Anyone who abuses or murders those much weaker than themselves (eg. animals, kids) deserves the most horrendous, painful form of punishment possible.
"I hope those bastards get inoperable brain cancer that they have passed on to their children."
-RedEye9