Virginia Valdez was arrested and charged with mayhem, assault with a deadly weapon and felony domestic abuse after the alleged attack Saturday, the Los Angeles Times reported.
Her 62-year-old husband, whose name was not released, was treated for a non-life-threatening wound in his genital area and was released from the hospital, police said.
Palm Springs police Sgt. Kyle Stjerne said the cause of the fight at the couple's home was under investigation.
"It was just a longstanding marital dispute, and we are not sure what caused her to do it," he said.
Valdez was released on $100,000 bail and is scheduled to have a court hearing in January.