She has taken a photo from my Husband's "Go Fund Me" account.The photo was taken on my phone and is my property which he has permission to use. It includes her two biological children and my two biological children that live with us. She did not have permission to post this photo to her Facebook and has me blocked from her page. She is NOT a physical custodial parent and only has supervised visitation with my Husband's children. Is there anything I can do legally? She has also directly slandered me and stated libel on her account, as well as discussed m Husband's sex organs in a derrogatory manner. Should I just save all this for Child Custody Court coming up to show her true character? Or can I sue her now?