Peggy Shannon, accompanied by attorney Gloria Allred, said she was flattered at first when Filner paid attention to her but later found his actions "disturbing," U-T San Diego reported.
"It became very stressful for me but I was not going to stay away from my job," Shannon told a news conference. "Every day when I went to work, I had butterflies in my stomach."
Shannon, who has three sons, four grandsons and two great-grandsons, said she went home and cried the day Filner kissed her.
Filner has been under fire for allegedly sexually harassing more than a dozen women. Allegations began surfacing more than a month ago and though Filner has been going for treatment, he has said he wouldn't resign.