PLANO, Texas -- A Plano mother who drowned her two children in 2003 is free to restart her life. Lisa Diaz is home with her relatives, just three years after killing her two young daughters. In September 2003, Diaz drowned the sisters, 3 and 6 years old. She told police voices told her to kill them and she was found not guilty by reason of insanity. Doctors said Diaz had recovered enough to be sent home, and a judge ordered her set free. Collin County prosecutors released this statement: "Given Ms. Diaz apparent swift recovery, Judge Rusch had no choice...