IMHO.. Crystal has simply chosen to forget whats too painful to remember..
Hopefully, someday she will break her denial and quit believing those who have with cruel and inhumane intent caused her the most pain....JMHO
ITA. Denial mixed with hope for Haleigh. Crystal does not want to admit to herself that Ron had any part in Haleigh's disappearance because than she has to face that Haleigh is gone forever. Crystal knows Ron well enough to know that if Ron could bring home a living Haleigh to escape jail, he would.