Joshua “J.J.” Vallow, at left, and Tylee Ryan.Photo: Rexburg Police Department (2)

Joshua Vallow, Tylee Ryan

The two children ofLori Vallowremain missing, as the mom defied a deadline Thursday to produce the children who allegedlydisappeared from their Idaho home in September.

“The only word coming to mind right now is ‘monster,’” Kay Woodcock, grandmother to one of the missing kids, said at a news conference Thursday where she confirmed the no-show, reports the Associated Press. “All this has just been very disheartening … I’m a lot less optimistic at the moment.”

“She’s not going to be able to keep doing the ‘Lori thing’ and not have to be accountable,” Woodcock also said, reportsAZFamily.com. “Everybody has to be accountable.”

The couple “abruptly vacated” their Rexburg, Idaho, home last November as local police carried out search warrants related to the disappearance of the children, police said, and they appeared to have been on the run since then. Woodcock said she was told the couple remain for now in Hawaii.

Lori Vallow.Rexburg Police Department

Lori Vallow

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Police have said they “strongly believe that Joshua and Tylee’s lives are in danger,” and previously issued in astatementalleging that Vallow “has refused to work with law enforcement to help us resolve this matter.”

“There’s too many deaths — people dying — around Lori for it to all be natural. Unless she is the most unlucky person in the world,” she said, reports AZFamily.

Directing her comment to Vallow, she said: “This could end rather quickly. But this could [also] end rather badly if you don’t follow the order and do what you’re supposed to do.”

In a separate statement to PEOPLE, Rexburg police said Vallow’s two children were not with the couple when they were stopped on Saturday, “and there is no evidence” the kids were ever in Hawaii.

Before moving to Arizona, Lori and Charles Vallow previously had lived on Kaua’i, reports AZFamily. After Charles Vallow’s shooting, Lori Vallow moved to Idaho, where she married Daybell.

“I can’t say for sure what’s going to happen next other than to say I hope it’s something that will get her attention, because I would love to know where those kids are,” Kay Woodcock said, reports the AP. “I think all America wants to know where they are.”

The grandparents have offered $20,000 for tips leading to the children’s recovery.

Anyone with information about either missing child is asked to call Rexburg police 208-359-3000 or 1-800-THE-LOST (843-5678).

source: people.com