How do I tell a girl that I am not interested in her?

I am having problems with a female coworkers that won't leave me alone. I have never approached her. I have never chatted her up. I have never smiled at her. I have never gave her any indication that I am interested in her. She has never acknowledged that she likes me, but I can tell. The shaming, smearing, gaslighting, name calling, and getting others to fight her battles are a good indication. Not a good sign in a woman. I have been isolating myself to avoid her because I know how much problems a scorned woman can cause for male coworkers.

She has never stated that she is into me so I can't just turn her down politely without risking her having denial accountability. Since I like being employed, and I like my job, I am concerned my fears won't be taken seriously by my supervisors. My plan is to ignore her until she gives up. Any advice?

I don't want to hurt her. I just want her to give up.