SCOTTSBLUFF, Neb. (AP) — A federal judge has dismissed a lawsuit against Scotts Bluff County filed by the mother of a jail guard strangled by a 15-year-old inmate.

Julie Baszler filed the lawsuit in U.S. District Court in North Platte a year ago after efforts to reach a settlement with the county failed.

Baszler’s daughter, Amanda Baker, was 24 when she was strangled by then-15-year-old Dylan Cardeilhac in 2014.

Baszler’s lawsuit points to inaction by Baker’s supervisor to try to resuscitate her after finding her unconscious. The supervisor was later fired.

In dismissing the lawsuit Tuesday, Chief U.S. District Judge Laurie Smith Camp said the Constitution doesn’t guarantee government employees minimal levels of safety or security in the workplace or against wrongful conduct of private actors.