Dina Knight will never forget the day she found her 22-year-old son, Peter, in his bedroom after overdosing on heroin.
"I open the door and my son's laying there, blood's coming out of his mouth, his buddy is doing CPR on him, I'm breathing for my son but as soon as I touch his lips, his lips are cold. I know he's dead," said Knight.
Peter was a U.S. Marine who died in February 2011 after his mother said he used heroin for just the second time.
"He had his whole life ahead of him. It wasn't supposed to be that way," said Knight.
After his death, Knight got the same tattoo as her son on her right arm as a way to honor his memory and educate others.
"I had a man in the Air Force the other day say, 'Nice tattoo,' and I said, 'Well, thank you it was my son's and he passed away' and if they ask then I'll tell them, I usually tell them, a heroin overdose and the conversation gets started," said Knight.
But Knight is now worried she could use another child to the same drug.
"To watch her die slowly every day and know she could end up the same way it's sickening. It's torture. It's awful," said Knight.
Knight said Peter's death devastated his younger sister, Christina, and ironically she turned to heroin, the same drug that killed her brother to numb her pain.
"She won't stop. She says she can't. It's too strong. It's too... it's her now. She's sick. It's a disease. It's an addiction that changes your mind. It changes everything about you," said Knight.
After failed attempts at rehab, police arrested Christina this week for drug possession.
Knight said she feels safer with her daughter behind bars.
"My biggest fear is I don't like to answer the phone because I'm afraid or standing at her door just praying and begging please don't let it be this time," said Knight.
Knight hopes her daughter's arrest will be a wakeup call and start of her daughter's road to recovery.
Copyright 2012 Scripps Media, Inc. All rights reserved. This material may not be published, broadcast, rewritten, or redistributed.
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