At the afternoon press conference, Sheryl Sawyers said she hoped that additional charges were filed against the pair. "I'm hoping that they are upgraded from 'injury to a child,' because she's not just injured, she's dead," Sawyers said, clutching an Elmo doll she had hoped to give to her granddaughter for Christmas if she was found.
Trenor, who was just 16 when she gave birth to the baby, had lived with the Sawyers family for two years before moving to Texas to be with Zeigler, who she reportedly met online.
"I think, pretty much, he could be anyone he wanted to be on the Internet," Sheryl Sawyers said of Zeigler. "Maybe he painted a pretty picture, and that's what made her move down there."
Tuttoilmondo said it was unclear whether Sheryl Sawyers or anyone else would be able to collect the $20,000 reward offered last week to anyone who provided authorities with information that lead to Baby Grace's identity.
When the little girl's body was found Oct. 29, investigators didn't have much to go on to identify her. They called in renowned forensic artist Lois Gibson, who came up with a sketch of the girl whom detectives called Baby Grace.
Gibson felt an overwhelming need to help determine the little girl's identity. "I needed to know the name of this girl, and I needed this to be over with," she said.
When Baby Grace was found, she was wearing a Target brand pink, flowing skirt, a pink shirt and white light-up tennis shoes with purple flowers on them. For a brief time, investigators looked into the possibility that the child's body was that of Madeleine McCann, a 4-year-old British girl, whose disappearance from a resort hotel in Portugal in May made international headlines, but they quickly ruled out a connection to that case.
It will take several weeks for DNA testing to prove conclusively that Baby Grace is Sawyers.
While Tuttoilmondo expressed thanks for the public's help in identifying the girl, and credited cooperative police work for the break in the case, he also said that tips that poured in have resulted in 22 additional missing girl cases they will continue to investigate.
The Associated Press contributed to this story.