A federal appeals panel expressed skepticism Wednesday that a heterosexual woman should be allowed to bring claims of sexual orientation discrimination after she was fired over a Facebook post that disparaged a transgender individual.

The three-judge panel of the U.S. Court of Appeals for the Fifth Circuit considered claims from a Louisiana woman, Bonnie O’Daniel, who argued that her supervisor, who is gay, unlawfully retaliated against her because she is heterosexual. O’Daniel lost her case in Louisiana federal district court.