The girl says the couple helped smuggle her into the U.S. when she was 12 years old. She's now an adult.
Deputies arrested Inez Martinez Garcia and Marcial Garcia Hernandez Thursday after a two-and-a-half-year investigation.
The girl told investigators the couple forced her to cook, clean, and care for their children, all under the threat of physical abuse. She says Hernandez also forced her to have sex with him and other men for money.