YOu are talking about 1st amendment rights. That is difficult. You also provide no information to support your claim that her statements are defamatory. That would mean that the statements 1) are false and 2) are damaging.
The above is not intended as legal advice. The response does not constitute the creation of an attorney client relationship as this forum does not provide for a confidential communication.
If they statements are true, they cannot be defamatory. There is no way to suppress that.
We do not have a client/attorney relationship until you make an appointment, we discuss your case face to face, I accept a retainer, and we explictly agree to enter into representation.
Sign up to receive a 3-part series of useful information and advice about personal injury law.