CENTENNIAL, Colo. -- A longtime friend of Shely Lowe took the stand Friday, saying that Lowe asked her to cover up the death of Aarone Thompson, and giving her a third version of how Aarone died.

Aarone was reported missing on Nov. 14, 2005. Police soon began to suspect that the girl wasn't missing, but was dead and had been dead for a long time. Aarone's father, Aaron Thompson, and his live-in girlfriend -- Shely Lowe -- were primary suspects in the case.

Lowe died of heart attack before she was ever arrested. Thompson is currently on trial.

Graves said during a conversation that she had with Lowe at Denver's City Park in "summer, early fall" of 2004, Lowe told her that Aarone had died the year before.

Lowe told her that when she went to check up on Aarone one morning, she found that Aarone had died in her sleep. She said she shook Aarone but nothing would revive her.

Lowe said she called for Thompson and he was frantic, Graves testified.

"(She said) Aarone wasn't breathing. Aaron screamed at her, 'What did you do? What did you do?' She screamed, 'I didn't do anything, I didn't do anything," Graves said.

Graves was not in the home or present when Aarone died but was in court to testify about what Lowe had said happened.

Lowe said Thompson told her to leave the bedroom, closed and locked the door and stayed alone with the body of his daughter, Aarone, for several hours while Lowe sat and cried on the stairs.

"Aaron made Shely leave the room. She sat on the stairs and she called her aunt," Graves said. She said Lowe "was shaking and crying" when she recounted the story.

"I've never seen her that upset. I was in shock," Graves said.

While telling her about the girl's death, Lowe asked her friend for a favor.

"(Shely) wanted to drive towards Michigan so she could find someplace where she and Aaron could stage that Aarone had been kidnapped out of the car," Graves said. "She wanted me to go. I was like, 'No, I'm not going to do that!'"

Graves said she started drinking to hide her pain and the dark secret she was keeping.

"I drank almost every single day. My kids didn't know what was going on. Some hadn't even seen me drink before. I just stayed drunk for months," Graves said.

Graves said she decided to turn on her friend and become an informant for police after watching Call 7 Investigator Tony Kovaleski's exclusive interview with Lowe and Thompson on Dec. 1, 2005.

"I seen the interview on Channel 7. I went home, cried, prayed. I called Detective Hansen and said I would do it because I felt that I had to. I was already upset, reflecting back and then when I seen that interview ... it just pissed me off, totally. It was like she (Aarone) didn't even exist, didn't even matter. That just pissed me off," Graves said.

Lowe began to suspect that her friend was turning on her, but every time she patted down Graves, looking for a secret recorder, she never found it.

Those secret conversations were played in court on Wednesday and Thursday, and parts were replayed on Friday.

"You fished it out of me. You know I didn't want to tell you," Lowe said in one of the recorded conversations.

Lowe said she was afraid to lose her children forever if police ever found out what happened.

"Keep my business to yourself. You are holding my kids in your hands!" Lowe warned her friend.

In a conversation recorded Feb. 1 2006, Lowe said, "Damn, I wish I didn't say a f***ing word to you. I should've f***ing known better."

"I gave you a few granules, that weighed the most on my mind. Now is there something else back there? Yes, there is," Lowe said.

When Graves continued to ask why she didn't call 911, Lowe said, "I did try. I tried my ass off."

"You think I'm lookin' forward to the bread and water days?" Lowe said. "It worked all right for the Ramseys. (I'm) in the same spot."

Later on, her suspicions of Graves grew.

In a conversation recorded May 11, 2006, Lowe continued to push Graves, asking her if she was working with police and and asking her if Lowe was going to run into her during the grand jury proceeding.

Lowe died the next day -- May 12, 2006.

The jury was dismissed early on Friday. Graves will be back on the stand Monday for cross examination.