A woman was jailed for five years yesterday for killing her four-month-old daughter, who suffered a range of injuries that left her brain damaged and with all but one of her limbs broken. Her husband received a three-year term. Ko Ka-yi, a 25-year-old housewife, pleaded guilty last month to the manslaughter of Ngai Hiu-ching, who died in February last year. Her husband, Ngai Kwok-leung, 27, was convicted last month of child abuse for failing to stop his wife from hurting the infant. In the Court of First Instance, Mrs Justice Verina Bokhary called the offence 'both tragic and serious'. Mrs Justice Bokhary also observed that Ngai had failed to inform doctors when their daughter was taken to hospital in February last year after Ko bent her limbs. Ronald Mayne, counsel for Ko, told the court in mitigation that 'Ko felt that her husband was selfish, shifting all the guilt to her'. He said his client believed the couple should have shared responsibility for their daughter's death. He said Ko planned to leave her husband after she was released. Mr Mayne further told the court Ko had been under stress because she did no feel she could adequately look after her daughter, who was diagnosed with a congenital heart disease before her birth. He urged Mrs Justice Bokhary 'to view her not as a person with an evil personality, rather a person suffering from a lack of maturity and from having stress she could not control'. The court heard during the trial that a postmortem examination revealed that Hiu-ching had brain damage, broken bones and bruising on her forehead and body. Her left arm was the only limb not broken. According to a psychiatric report, Ngai showed no feelings of guilt over his daughter's death. Maurice Tracy, counsel for Ngai, said that while his client did not want to pin the blame on Ko, he had been caught up in a situation caused by his wife's inability to properly look after the infant. Ko and Ngai, who married in January last year after living together for seven years, had another child before Hiu-ching. Ngai was sentenced to one year in jail in September 2000 after he pleaded guilty to abusing that child, who suffered brain damage and mild retardation as a result. The girl is being cared for by the Po Leung Kuk.