Garrido and her husband, Phillip, are accused of kidnapping 11-year-old Jaycee Dugard in 1991 and holding her captive for 18 years in the backyard of their Antioch, Calif. home.
They're charged with 29 felonies, including kidnapping, rape and false imprisonment and are slated for a court appearance Monday.
It should be brief, according to CBS News Correspondent John Blackstone, who says the judge is likely to set a date for the preliminary hearing.
Defense attorneys for the Garridos are expected to ask for bail, but analysts it's unlikely bail will be granted, since Phillip Garrido is charged with committing crimes against Jaycee while he was on parole.
And CBS News has learned Phillip Garrido is also being kept in isolation.
Nancy Garrido is "every bit as culpable for all of the crimes that he's been charged with, in every bit the same way," assuming they're convicted, points out CBS News Legal Analyst Trent Copeland.
Sources describe Nancy as "very lonely," and say she spends her time reading the Bible.
The court appearance would be the first time the Garridos have seen each other since their Aug. 28 arraignment.
Fellow prisoners threatening suspects in cases like this, and those suspects being kept isolated from other inmates for their own protection, are common, former San Francisco prosecutor Michael Cardoza told substitute "Early Show" co-anchor Jeff Glor Monday.
"In a prison system," Cardoza said, "there is a certain code of morality, and this type of crime ranks at the very, very bottom. So it doesn't shock me either one of them has been threatened with death or the other type of
thing, the rape, whatever else they've been threatened with.
"The sheriffs in the jail there have to keep them apart from the rest. And even when and if they go to prison, they will have to be kept in isolation, because that will be the big worry, that someone will try to murder them."
Cardoza said investigators who've seen Dugard recently say she's doing "great" and looks "radiant." She's in psychotherapy, Cardoza says.
Blackstone also reports that, 30 years ago, religion was the reason Phillip Garrido gave for not wanting to be transferred from prison to a mental health facility. While serving time for a 1976 rape conviction, he told a psychologist he wanted to stay in the prison to continue his religious studies.
Meanwhile, Blackstone adds, investigators in the case have expanded their search to include people who did business with Phillip Garrido's printing company.
Police removed DVDs, VHS tapes and a computer from the home of Jim and Cheyvonne Molino. "They went through everything," Cheyvonne says "They went through my drawers, my garbage, they went through everything personal."
The Molinos claim they only know the Phillip Garrido through business but, says Blackstone, Jaycee's daughters were photographed at a birthday party for the Molinos' daughter.