Then next morning Ashley went to school. But when she came home, she said that her mother was waiting with another offer of alcohol.
Stacey handed Ashley a cup with vodka, Sprite and orange juice mixed together. Ashley said the drink tasted bitter and awful, but she drank it anyway. After Stacey and Ashley finished drinking, Ashleywent to sleep.
The next morning, Stacey's younger daughter, Bree Wallace, was concerned her sister had not come out of her room and went to check on her.
"Her mouth was open and her eyes were wide open and they were all glassy," Bree Wallace, 17, recalled. "I tried to call her name and she didn't answer me. I screamed for my mom and she came flying."
For the third time in eight years, Stacey Castor called 911.
"I need an ambulance," she said on the 911 call. "My daughter, I believe, had taken some pills. Ashley? She's having trouble I think. Ashley? Ashley? Oh my God, oh my God."
CLICK HERE to listen to the 911 call.
Stacey told the 911 dispatcher that Ashley had swallowed dozens of pills and a bottle of vodka. When Bree Wallace went back into her sister's room, she discovered something that turned the case on its head: an apparent suicide note. CLICK HERE to read the note.
The 750-word typewritten letter was a shocking confession to the murders of Michael Wallace and David Castor, Ashley Wallace's father and stepfather. The note -- with Ashley's name at the bottom -- gave a detailed account of the poisonings only the murderer could know. In the note, Ashley also allegedly said goodbye to her boyfriend and sister and offered this message to her mother: "Now everyone is going to know what really happened, and they know it wasn't you, it was me." The final words: "Please don't hate me. Remember, I love you."
Ashley Wallace was rushed to the hospital, where Sgt. Michael Norton was the first to see her arrive.
"They wheeled her in," he said. "She was basically unresponsive. They were running around, trying to save this girl's life."
According to Ashley Wallace's emergency room doctor, Daniel Olsson, "Her heart was beating at 170, 190 times a minute and was very erratic," and she was not making sense.
"If they didn't figure out what she had ingested or how much, there was a real potential she was not going to make it," Norton said.
Bree Wallace was at the hospital with Stacey, who was initially not allowed into her daughter's room.
"She was shaking and saying, 'I don't know why they won't let me see her,'" Bree Wallace said. '"I'm her mother. I should be in there.'"
When she was eventually let in to see her daughter, "I told her that I loved her," Stacey said. "It was the last thing I got to say to her."
Ashley recalled waking up in the hospital after her overdose.
"I couldn't really see," she said. "It was blurry. I feel like I'm in tunnel vision. I realize I'm in the hospital because my arms are tied down. I had ripped a tube out from thrashing around."
Ashley recounted her conversation with Norton, the first detective to speak with her. "He's yelling at me, 'How many pills did you take? What did you take? What did you drink?"
When Norton told her there was a suicide note, he said Ashley looked at him as if he were "out of his mind."
"I'm like, 'What are they talking about?'" she said. "'I didn't do any of these things that you're saying that I did.'"