Cher questioned the doctor caring for her son in her desperate fight to gain sole conservatorship of Elijah Blue Allman. In documents obtained by RadarOnline.com, the 77-year-old singer insisted Dr. Howard Samuels is “not a medical doctor” but a licensed marriage and family therapist, whose opinion of her “untreated” son’s mental health should not be used in court — and she’s got his license to prove it. “In Elijah’s recent papers, he represents that he is under the care of a ‘Dr. Howard Samuels.’ Howard Samuels is not a medical doctor. He is a licensed marriage and family therapist and has a …