Tell management this has got to stop or
you'll take LEGAL action which MIGHT
include suing them (management).
Tell them you feel threatened by this
person and that THEY are responsible
for the safety of their workers!
You can also file a PPO against this
person. Drag her into court and have
her explain to the judge why she is
spreading these rumors.
You might have to just sue her for
defamation (Circuit Court) for $25,000.
That'll get her attention.
If she threatens you file a police report
THIS ANSWER IS PURELY FOR ACADEMIC DISCUSSION ONLY AND DOES NOT CONSTITUTE ANY TYPE OF LEGAL ADVICE OR LEGAL REPRESENTATION.
I would need more facts to determine whether you have a claim for sex discrimination of sexual harassment. First, is this woman your supervisor? (If so, your employer might be responsible for her misconduct, and you might have a claim. If not, and if she has no influence over the terms and conditions of your employer, you probably have no claim). Has the situation resulted in an adverse change in the terms and conditions of your employment? Has management retaliated against you in any way for raising the issue with them? Only after knowing the answer to these and many other questions could I begin to advise you.
If management is ignoring your complaints, then you need to make a record that you made them. Your first step should be be to retain employment counsel to review all of the facts and circumstances. If appropriate such counsel could write a cease and desist letter to this woman together, with a copy to management. If this does not solve the problem, you may wish to consider suing this woman (although before doing so I would want to make sure that this will not backfire against you and cause you to lose your job). Bottom line---you need to retain counsel to represent you in this matter---self-help is not a good idea.