harassment

Yo have any proof  of her doing so with you then you can file departmental complaint and if they failed to take any action you can proceed with police complaint.

Write email to HR department and mark CC to Management and mention your greviances. If they dont take action then approach police authorities.

She had been harassing you since the year 2016, but you have not taken any action to stop this harassment?

You may better take legal steps to stop her at least now.