The woman, identified to the public as "Aleph of the President's Residence," was the first to accuse Katzav of rape, though her testimony was determined to be unreliable. Her complaints incited other woman to come forward accusing Katzav of similar crimes.
Katzav is now in jail for the sexual offenses, but police accused Aleph of stalking the former leader and sending him some 300 text messages over the course of several months after the two split up, Israeli broadcaster Arutz Sheva reported Tuesday.
"I know how to confront people, even shout and curse," she wrote in one text. "You've seen it. Don't bring out the evil in me, you will regret it."
"Don't let me be wounded, you will regret it until your final day. If I shed one tear, you will shed ten," she texted another time.
In another incident, Aleph allegedly confronted Katzav at his home where the two argued and the woman slapped the former leader.
Aleph denied wrongdoing when she was questioned by police, Arutz Sheva said.
"My client will not be dragged into mudslinging in the press. The relationship between her and the man ended unpleasantly. However, his complaint against her is unfounded," her lawyer said.