I don't think they are the same. The older woman's lips are fuller and I think the two front teeth are different. I'm guessing the younger girl's picture was taken between 1971 and 1974 based on the clothing and Alcala's timeline. It's not a picture taken on the east coast. Even if the older woman's picture was taken in 1979, I just don't feel the younger girl would have aged that much. Also, he would have had to have someone keep her captive when he was in prison although that is a possibility. I just think the older woman's skin looks considerably older, especially in the chest area.