Young mother Tracey Bradley, who died tragically in her Keighley home, was at the forefront of an anti-drugs campaign in Spain.
Tracey, 28, went on national Spanish television to warn youngster about the dangers -- after successful rehabilitation treatment.
Her fight to kick her hard drugs habit was revealed by her mother, who was telling of her heartbreak at the death of her daughter.
Tracey died after being injected with a fatal fix of heroin by her drug addict boyfriend.
Shortly before receiving the overdose, Tracey had written an emotional letter to her parents which arrived the day after she died.
Irene Bradley who lives in Poole, Dorset, recalled: "The letter said 'I am trying really hard mum'.
'I have reduced my methadone (a heroin substitute) dose to ten milligrams a day. I am going to come down and stay with you and get myself sorted out'."
Instead, the 28-year-old overdosed, collapsed and died after Jason Caswell injected her in the arm with a syringe of heroin at their flat at Wensleydale House, Keighley.
Caswell was jailed for four-and-a-half years after being found guilty on a manslaughter charge.
Mrs Bradley, 51, said: "About ten days before her death, Tracey said she was coming down to stay with us.
"We said we would pick her up but she said 'Don't worry, I've got money I'll get the train'.
"If Tracey had come, she would be here today."
Bradford Crown Court heard how Tracey had desperately been trying to kick her habit and piece her life together so that she could regain custody of her seven-year-old son, John.
"I feel sure if she had got away from Caswell and away from the area she would have found the right track again," said Mrs Bradley.
Despite coming from an affluent and respectable family, Tracey first took crack cocaine when she was 21 while living in Lanzarote. She had met a boyfriend and after they had an argument, his friends encouraged her to smoke the highly-addictive drug.
Two months later she discovered she was pregnant and flew back to England.
"She wanted to make sure the baby was okay so left that whole scene behind and gave birth to a beautiful boy," said Mrs Bradley.
But later, after her boyfriend flew across after her, Tracey began smoking the drug again.
"She knew she was on the wrong track and went back to Spain and voluntarily went into rehab," said Mrs Bradley.
After the successful treatment, Tracey even appeared on Spanish television to warn youngsters about the dangers of drugs.
"Then she was like my old Tracey. She put on weight and was full of bounce again. She was kind-hearted and happy-go-lucky -- the most mischievous monkey that was ever born," said Mrs Bradley.
She said her daughter "stayed clean" until after returning to her native West Yorkshire and met Caswell two years ago.
Since then, her drug taking spiralled out of control until her tragic death.
Mrs Bradley said: "I asked her why she stayed with him. She said 'I was able to kick the habit and I thought I could help him but I can't'.
"She had been such a perfect child. When she was born she melted everybody's heart -- then, when she got older, she broke everyone's heart.
"Her son often cries when he is with me. Tracey was very much like me and I think he senses that."
As a youngster, Tracey had been an excellent pupil and a Guide. She played classical guitar, practised ballet, and in her spare time took part in Duke of Edinburgh Award schemes and life-saving training.
Mrs Bradley said: "It can happen to anyone. You can come from a slum council estate or live in a mansion -- heroin will destroy your life.
"I will never, ever forgive him for taking my daughter away from me."
Horrible heroin - page 5
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