LAFAYETTE, Colo. -- The family of a Lafayette woman who was found dead in the back of her car will hold a private memorial service Friday afternoon outside the woman's home, but the woman's daughter won't be able to attend.

Linda Damm's decomposing body was found by police last week and her 15-year-old daughter, Tess, and two other teens were charged as adults in connection with her slaying and attempts to dispose of her body.

A statement from Damm's siblings was released to the media early Friday. It discussed the death and said people should honor the memory of Linda Damm by loving, honoring and holding their own children. They also said parents should be involved in every aspect of their children's lives.

"Teach them to value life and maintain integrity," Damm’s oldest sister, Helen, 54, said in the statement. Damm’s sisters, and her brother asked that their last names not be published in order to protect their privacy.

The family statement also talked about Linda Damm's problem with alcohol:

"We want everyone to know that Linda made every effort to dedicate her life to raising her only child, Tess. We are sad to say that alcohol also played a significant role in Linda’s life. She was a functioning alcoholic for many years, however the last few years Linda found her addiction more and more difficult to deal with. We supported and encouraged her recent efforts to get help, but Linda was not able to conquer her addiction," the statement said in part.

Helen said in the statement that her family wants everyone involved in the crime to be held accountable, but they plan to support Tess.

"We want Tess to know that we love her," said Helen, who took Tess in last summer.

Tess Damm's boyfriend, Bryan Grove, 17, and his friend Jared Guy, 18, have also been charged in the homicide. A fourth teen is under arrest but has not been formally charged.

Grove is charged with first-degree murder, conspiracy and tampering with evidence. He is being held in adult confinement at the Boulder County Jail and has been on and off suicide watch.

Tess Damm is charged with conspiracy to commit murder, tampering with evidence and being an accessory to a crime. Guy faces the same accessory and tampering charges. Police allege he and Grove attempted to dispose of the body twice, once in a landfill and the second time by burying it in a cemetery.

A police affidavit alleges that Guy also watched the body as it decomposed because he was taking a police forensics class that dealt with the stages bodies go through after death.

Guy told a Longmont Times-Call reporter on Wednesday that he's not the bad person being portrayed in the press.

"I have seen the news and stuff, and they are not portraying me as I really am," he told the reporter. "They are portraying me as this really bad kid, and I am really not."

Tess Damm will not be allowed to attend the memorial service for her mother, the family said. A Boulder district judge on Thursday denied a motion by Damm's guardian that she be released from the Platte Valley Detention Center in Weld County in order to attend the funeral.

The family had offered to pay for the sheriff's deputies who would have had to accompany the girl while she was attending the service.