Karan Walker, who lived just a few doors down from the compound where Jaycee Lee Dugard lived in captivity for 18 years, allegedly confined by the Garridos, said she found encounters with Nancy Garrido disturbing.
Walker said Nancy had "erratic movements," from what she suspected was drug use, and also poor hygiene.
Walker said, apparently referring to one of Dugard's children, "The little girl was really pale for not being out in the sun."
Walker told CBS News, "It's just disturbing that all of the kids in the neighborhood playing around here and he on numerous occasions I've seen (Phillip) driving by the house."
Danielle Leblue, an acquaintance of Phillip Garrido said her son warned her of Phillip's behavior.
Leblue said, "(He said), 'Mom there is something kind of strange about him. I said, 'No baby, it's just that he has different beliefs than all of us. He said, 'No there's something strange about him.'"
Read more stories on the Dugard case on CBSNews.com:
Prior Victim "Horrified" Over Jaycee Story
Nancy Garrido Misses "Family," Lawyer Says
Witness: Jaycee's Kids Seemed Normal
Bone in Backyard: Is it Human?
Garrido Revealed Rape Fantasy in Testimony
Slideshow: Inside Jaycee Dugard's Terror Tent
The Garridos are both facing multiple charges, including kidnapping for sexual purposes and forcible rape.
Walker said, "I'm glad he was caught when he was, but it should have happened sooner."
Walker shares a growing concern that the convicted rapist was released early, free to roam her neighborhood.
Phillip Garrido would be in prison right now, and through the year 2027, if he had served his full 50 year sentence for kidnapping and raping a woman in 1977. But Garrido was released on parole after serving only 11 years.
Peter Coleridge, a defense attorney, said, "They changed the law in 1987, and Mr. Garrido -- from the federal system -- certainly never would have gotten out."
Jonathan Simon, a law professor with the University of California Law School at Berkeley, explained parole rules were very different back in the 70s when Garrido was sentenced. There was a lot of wiggle room for early release. Guidelines became stricter in the '80s.
Coleridge added investigators assigned to regular home visits all missed opportunities to discover Garrido's hidden compound.
"Early Show" national correspondent Hattie Kauffman asked Coleridge, "If you were a parole officer, and if you are visiting a parolee and he's got this gigantic fence behind him don't you think that they would be curious?"
Coleridge said, "One would hope that they would be curious."
Because there are several unsolved murders in the surrounding area, Kauffman reported, police combed through the compound where Dugard and her daughters were held captive. She said, though they found a bone fragment and several other items that require forensic testing, police have so far found nothing that definitively ties the Garridos to any of those unsolved crimes.