Garrido had his own cult religion going from the delusions about voices, manifestos, angels, god... that isn't unusual for a pedophile to also have what some researchers have called a "Mom & Pop cult". There are more small family type cult groups like this in the US than you can imagine. Our freedoms have the achilles heel of anyone being able to start their own religion. It's common that these types of cult leaders use undue influence, like he did on the child he kidnapped, to get those close to them to conform to his own religious delusions. As a child, in particular, she had no defense against that. Having lived under his control since age 11, there was probably in her mind no other way to live, so she would not even think of leaving, especially having 2 young daughters that he controlled, too.