It is common knowledge in my family that my father was a sperm donor 30 years ago, and we are all pretty accepting of the fact that he probably has donor children out there. He has never expressed interest in contacting any of them. Recently, my go-getter cousin who has a history of overstepping boundaries used an online DNA test, through which she found many genetic first cousins—my father’s donor children, who are adults now. She has eagerly contacted them, explaining who my father is and giving details about our family. On at least one account, she repeatedly messaged someone who ignored her first message. My father, as well as the rest of my immediate family, is very uncomfortable with this. It comes off as the sperm donor using his niece to contact these people, and she gives us all a bad name by harassing people who may not want anything to do with their donor. Is it within my father’s rights to ask her to please stop this kind of contact, or is she free to annoy these people who are technically her genetic family too?