She went to law school in the state capital, Jalapa, in 1984 and began working part time for the Veracruz Attorney General's Offices in 1986.
Digna Ochoa was killed October 19, 2001 in Mexico City. Her body was found in the law office where she worked. A note was found by her body, warning the members of the human rights law centre where she had recently worked that the same thing could happen to them.
Several investigations followed her death. Although Mexico City officials initially ruled her death homicide, in March 2002 they ruled that it was suicide, a claim that was disputed by several senators. The autopsy report indicated that her body had two .22 caliber bullet wounds. Her death was caused by a gun shot to the head. The entry wound was on the left side. According to the coroner's report, the bullet passed through the skull from left to right on a slight angle from up to down and from back to front. The bullet remained embedded in her right temporal bone. Ochoa was right handed. The other bullet entered Digna's thigh from front to back.
- Diebel, Linda.  2006. Betrayed: The Assassination of Digna Ochoa. New York: Carroll & Graf Publishers, ISBN 978-0-7867-1753-8
- Proceso (Mexican magazine) number 1398, published on August 17th 2003