The Hidalgo County Sheriff's Office issued an Amber Alert Sunday for Priscilla Martinez. She has black hair, brown eyes and wears black glasses.
Authorities are searching for Rudolfo Nuncio Jr, 41, in connection with her disappearance.
"Priscilla was described as a white female, 160 pounds and 5'11" tall.
Donna is in far South Texas.
Nuncio is 5 feet 8 inches tall and weighs 180 pounds.
They may be in a silver, two-door 2015 Dodge Ram pickup with the license plate #HFW2831. The truck was said to have mud flaps with a horse and wings design. He was last heard from in the Dallas area.
KVEO confirms law enforcement believes she is in "grave or immediate danger". Anyone with information on this abduction or Nuncio, Jr.'s whereabouts is urged to call the Hidalgo County Sheriff's Officer at 956-383-8114.