Is it a crime for my sister not to allow my daughter to call me?

I have a restraining order for myself and my child (age 10), against my husband. My sister, whom I trusted with my daughter, conspired with husband when my daughter was visting her, forced her to talk about him and tried to guilt trip her (while texting husband and showing daughter texts), even after my daughter told her to stop and then would not let her call me. My daughter felt uncomfortable and harrassed and now my sister denies my daughters story completely. Is this a crime?