At age 15, Livermore teen Kayla Reed's future looked bright. But in early December 2005, the light turned dark when young Kayla disappeared.

For over a month, there was speculation and worry by friends and family over the teen's disappearance. On January 10th, 2006, the wondering stopped. Her body was found in the Delta Mendota Canal in the Central Valley and the search turned into a homicide investigation.

Two weeks later at a candlelight vigil in Livermore, there was Angel Sheets, Kayla Reed's mother. Police said Sheets initially reported Kayla missing from their townhouse.

Naomi Gaunt lived right next door to Sheets.

"We heard them screaming a lot and fighting a lot.When I first heard about it I thought Angel might be involved somehow," said Gaunt.

Livermore police believed the same thing. Nearly two years after Kayla's body was found, Angel Sheets and her friend, Dennis Murphy, were named persons of interest.

Investigators said Sheets failed a polygraph when asked about covering up physical evidence.They also said Dennis Murphy told detectives quite the story about the night Kayla disappeared.

Murphy said he went to Angel Sheets' townhouse to smoke meth with her, but when Angel couldn't find the drugs, she blamed Kayla. Murphy said Angel pushed Kayla, holding her against the refridgerator.

"Angel told her 'This could get me killed, but it’s not going to get me killed. It’s going to get you killed,'" according to Murphy.

Murphy said he told police. That's when he left the home.

"The only other thing I can add is there was a confession," said Angel Sheets' sister Claudia Jagels.

Six years have passed since Kayla's body was found, but there have been no arrests and no charges filed. Twice, including once as recently as last year, Jagels said the Alameda County District Attorney's office has refused to charge the case.

"I honestly feel this case is not being pursued because Kayla came from a poor background," said Jagels.

Recently, Jagles showed KTVU documents she has never shown anyone. These were private emails sent from police to her that detailed clues about the case.

In one dated May 13, 2008, a now-retired captain talked about a cadaver dog alerting inside Angel Sheets' van. Inside the van, detectives found a police scanner, a map of the Delta with three areas near the canal highlighted in yellow, and a video tape of a movie about the Robin Hood Hills murder case where three young boys were dumped in water.

Another email talks about a 2007 posting on the website Topix.

An anonymous person from Livermore wrote, "we all know you did it Angel. You threw Kayla against the refrigerator knocking her out and then you and Dennis threw her in your van and got rid of her like a piece of trash."

An email from Lt Scott Trudeau to Jagels stated police tracked down the IP address to a woman who's boyfriend apparently knew Angel. According to the email, that woman told police Angel confessed to her boyfriend, saying she had pushed Kayla against the refrigerator and took her body to the Delta.

"That story matches by both people of interests," said Jagels. "Then you have a child found five weeks later floating in the Delta Mendota Canal." .

In January 2010, Captain Trudeau sent Jagels an email with the following statement: "We actually feel that as things stand, we have enough information to persue charges. We just haven't gotten the case in front of the right DA."

The Alameda County District Attorney's office declined to comment on the Kayla Reed case.

"It has absolutely destroyed my belief in the justice system," said Jagels.She says she no longer talks to her sister Angel.

At last check, Jagels said Angel was living on the streets somewhere in the Central Valley.

Jagels remains on a mission in a fight for justice, hoping for charges to be filed against her own sister all the while keeping her memories of Kayla close to her heart.