L.G.B.T. activists and their supporters rally in support of transgender people on the steps of New York City Hall, October 24, 2018 in New York City.

A mother in Minnesota who sued her transgender daughter for emancipating herself and then obtaining gender transition care is bringing her case to the Supreme Court, though her daughter is no longer a party to the case.

Anmarie Calgaro, represented by the conservative Thomas More Society, filed a petition on Wednesday alleging that her "parental Due Process Clause rights" were violated by St. Louis County, medical providers and the St. Louis County School District.

Her daughter, identified in court papers as E.J.K., moved out in 2015 and at 15 years old obtained a letter from a legal clinic that concluded E.J.K. was "legally emancipated."

Using that letter, E.J.K. was able to obtain gender transition care, described in the petition "as life-altering elective medical services for gender transformation, including potential surgery," and prescription medication from two medical providers. When Calgaro attempted to intervene, the medical providers rebuffed her. So too did E.J.K.'s high school, when Calgaro sought to obtain her daughter's educational records.

A district court ruled against Calgaro and a three-judge panel of the 8th U.S. Circuit Court of Appeals affirmed the ruling in March. Circuit Judge Steven Colloton, writing for the panel, noted that E.J.K. had turned 18 and finished high school, and thus Calgaro's claims were moot.

"Unbelievably, Minnesota statutes authorize a county to deem a minor 'emancipated' to receive welfare payments to live on their own and allow medical providers to void parental input if it determines the minor is living apart from the parents and is managing his or her own personal financial affairs," Erick Kaardal, an attorney for the Thomas More Society, said in a statement.