H.M. (plaintiff) is from Canada and is the biological mother of a child conceived by artificial insemination through a donor. H.M. was in a same-sex relationship with E.T. (defendant). H.M. alleges that when she made the decision to conceive the child, she relied upon E.T.’s promise to support the child. H.M. and E.T. separated, and H.M. filed a child-support petition, pursuant to the Uniform Interstate Family Support Act, to obtain support from E.T. The family court held in favor of H.M. and ordered E.T. to pay child support under the principle of equitable estoppel. Ultimately, the Appellate Division of the Supreme Court of New York took up the question of whether H.M. had a cause of action for child support against E.T.