A mother-of-two who started dealing in heroin to try to salvage her ailing business was yesterday sent to prison for eight years. Cheng Sun-in screamed hysterically as she was led from the courtroom. Cheng, 28, who pleaded guilty to drug trafficking, was sharing the High Court dock with her husband, Yeung Ngan-bun, 33, who had earlier denied possession of a small quantity of heroin. 'The wife seems to have been vulnerable to bad elements in her exposure to the public in her video shop and gradually became ensnared in drug trafficking,' Deputy Judge Wayne Wilson said. Cheng wept as her lawyer described the tragic circumstances that led her to crime. 'Today you see her very tearful and miserable,' Anthony Mitchell-Heggs, acting for the couple, told the court. 'She has lost everything.' Cheng turned to crime after her Kwai Chung video shop ran into financial trouble. Her partner had pulled out of the business and her debts were spiralling. She became involved with traffickers hoping to raise enough money to save her business, the court was told. Her shop became a front for drug runners, and her flat was used to store drugs. Police raided her Kwai Chung flat on March 5 and discovered the stash. She then admitted there was more heroin in her shop and police seized 225 grams. Her husband was caught with 0.06 grams of heroin in his pocket. He was convicted after trial. Deputy Judge Wilson sentenced Yeung to four months' imprisonment. He was released immediately, having already spent the past six months in custody.