ORANGE COUNTY, Fla. -- The grandparents of missing 2-year-old Caylee Anthony meet with investigators at the Orange County Sheriff's Office for three hours on Monday. It's just one of several critical developments expected in the case this week.

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TEAM COVERAGE: Grandparents Questioned Again While Mom Remains Jailed
VIGIL: Anthony Family Raising Money For Search
EVIDENCE REMOVED: See Images | Watch Raw Video
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ARCHIVE: Read Previous Reports Related To Anthony Case
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Monday's meeting was a continuation of their meeting on Friday, because they had to cut short Friday's meeting to attend a fundraiser. They met with investigators Monday for around three hours and left the sheriff's office around 12:30pm.

"They're working as hard as they can to find Caylee and that's their goal. We have to find Caylee," Cindy Anthony said as they left the sheriff's office Monday.

No other meetings have been scheduled and Cindy Anthony said nothing about what was specifically discussed.

Jose Baez, the attorney for the mother of the missing toddler, said they were going to appeal Casey Anthony's bond to the State Supreme Court, but no appeal has been filed. Baez's office says attorney Michael Walsh is researching it.

Meanwhile, the State Attorney's Office has a little more than a week and a half to decide if it's going to file any charges against Casey. Her father hinted Sunday she won't get away scot-free.

"She has to pay for some of the stuff that she put herself through and put her daughter through," George Anthony said.

Investigators expect to have results this week on crucial DNA evidence taken from Casey Anthony's car. Investigators said they found stain in the trunk of Casey Anthony's car, hair samples and a bad smell coming from the trunk. Police question if the stain is biological or not. That question is expected to be answered when the DNA test results from the stain come back this week.

Eyewitness News asked Caylee's grandfather George Anthony what he expected the results to be.

"They are going to be what they are going to be. I have no control over it, I don't know what they are. I don't believe they are going to find anything," George Anthony said.

ATTORNEY DENIES RUMORED LETTER EXISTS

George Anthony visited his daughter in the Orange County jail Sunday to try to get more answers about his granddaughter's disappearance. When he emerged from the emotional visit, he said he had learned nothing new. He did say that Casey had given her attorney a letter that possibly contained clues about Caylee's disappearance.

However, when Channel 9 talked to Casey Anthony's attorney, he said all of the talk about the letter is absurd. He said the letter doesn't exist and he never asked for one in the first place.

It is still unclear if Casey is writing letters to her family. Casey's father seemed frustrated and said he asked Casey tough questions. He also admitted his daughter has made mistakes. Still, George insists his granddaughter is alive. He's so confident she will return, he's planning a birthday party for Caylee in a few days.

George Anthony said publicly that he will not let himself think about the worst-case scenario. He stated that he cannot allow himself to become negative. George said that his last encounter with his daughter Casey was an emotionally charged 45-minute conversation.

Investigators also said that Casey's ex-fiancée changed the story he told about hearing Caylee's voice over the phone days after her mother says she disappeared. Jesse Grund made another statement to deputies. Sources close to the investigation said the ex-fiancée stated that he is not positive he heard little Caylee Anthony on a phone conversation he had with Casey on June 24.

Grund released a statement to Channel 9: "I could not testify 100% that I did hear her on that specific phone call. I still believe that I did hear her, but I can't separate this call with other calls I have had with Casey in the past. I definitely stand by what I said that I heard Casey scold Caylee to get off the table during that call on June 24th."

ANTHONY FAMILY TO HOLD WEEKLY VIGILS

The Anthony family is getting the help from their friends and complete strangers. The family said it will hold a candlelight vigil every Sunday night until the Caylee is found.

They were joined by dozens of supporters Sunday night. The driveway and the front yard was filled with family members and strangers. The family encouraged them to keep searching for Caylee and lashed out at anyone who believes she's dead.

"I'm telling everybody, get off your a** and look for my granddaughter," said Cindy Anthony, Caylee's grandmother.

Cindy Anthony is growing frustrated. She told a crowd of about 100 supporters at a vigil that the search for her 2-year-old granddaughter is tiring and admitted the negative media attention is starting to wear on her.

"I'm not going to let it suck me dry. Don't get caught up in all this stuff because the truth will come out," Cindy said.

The crowds at the vigils continue to grow. Everyone in front of the Anthony home on Sunday lit a candle for little Caylee. Volunteers handed out new purple bracelets that promote the website set up to find the toddler.

"She's just a precious little angel that needs support from all around," said supporter Shelli Khare.

Many of the people cried for the Anthony family because they have children of their own. They prayed little Caylee will return home soon.

"It's been longer now, starting to get a little more scary," said supporter Stephanie Davis.

GROUP HELPS TO RAISE FUNDS

George Anthony appeared at a Publix shopping center Saturday to help pass out fliers with his granddaughter's picture on them. He said he plans on Monday to have a giant moving billboard with her image near where a car involved in the case was found a few weeks ago.

Anthony choked back tears Friday night as he looked out on a crowd of friends and strangers, leaving it to his son to explain what the family is feeling.

"Frankly, every day is as hard as the first day," said Lee Anthony.

Carole Bernhardt understands. Eight years ago, someone snatched her then 8-year-old grandson Zachary from his bed in Clearwater while his family was sleeping.

"Everybody says, and they're wrong if they say it, 'We know how you feel,'" said Bernhardt.

She met the Anthonys for the first time and immediately connected with fellow grandmother Cindy Anthony.

"As soon as she looked at me she hugged me and said, 'Thank God you're here. You understand,'" said Bernhardt.

"They've had a child missing for eight years," said Cindy Anthony. "I don't know if I can go that long"

Both families have turned to the Kid Finder Network, a company Sheri Milstead and her husband founded to keep missing children in the public eye. It's already helped design and donate more than 60,000 fliers, almost a thousand T-shirts and several massive billboards with Caylee Anthony's photography.

And while the Milsteads say they've never experienced the loss of a child, they were touched by the high profile disappearance of Trenton Duckett two years ago in Lake County. They started their company after seeing that case.