Sign up for the Slatest to get the most insightful analysis, criticism, and advice out there, delivered to your inbox daily. We tried years of family therapy, but the moment she finished high school, she left for college and basically cut ties. Nothing I say, though, can convince my daughter that I am her mother or persuade her to come to therapy with me. Let the ties stay cut! Reach back out to your daughter and suggest that the two of you do genetic testing to establish the truth.