Personal information about me was shared in private and trust by my husband to his sister, which has then been passed on deliberately by her to his ex-wife to use in a Family Court action to which I am not a Respondent. 

This information has now been included in a court-appointed psychologist's report to the judge and so is now a matter of public record.  This was deliberate and malicious. Now I am a public figure.

What legal recourse do I have against the sister?