Great Yarmouth teenager Katy Bown guilty of killing neighbour

Katy Bown Katy Bown has an IQ of 66 and the reading age of a five year old, the jury was told

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A mother who killed her neighbour after an argument about the noise of his motorbike has been sentenced to seven years in a young offenders institution.

Katy Bown, 18, had been trying to get her toddler to sleep and rowed with Shane Boulton and his girlfriend in Great Yarmouth, last June.

She got a knife from home and stabbed him in the chest. He died in hospital.

Judge Peter Jacobs at Norwich Crown Court said she "planned revenge" when she left her house with the knife.

The jury in her trial acquitted her of murder but she had previously admitted manslaughter.

Shane Boulton Shane Boulton's family said they were disappointed with the verdict

Judge Jacobs said: "I want to make it abundantly clear that in my judgement this was not a loss of control case and it was certainly not a diminished case.

"It is impossible for me to say who actually started the violence but there came a point when Shane Boulton and his girlfriend returned to their own property and stood in the street outside.

"At that point all you had to do was simply go to your house and stay with your child.

"However, instead you planned revenge. The appropriate sentence here is a determinate term of seven years detention in a young offenders institution plus an extended term of a further three years."

It is likely that Bown will be released early and the judge said: "If the normal release provisions are applied you will then be at least 21 and under licence for a further six years also."

Defence barrister John Goodman had told the court that rather than being a manipulative and calculating liar, she was a fragile, vulnerable, frightened young girl.

A forensic consultant psychiatrist, Dr Daniel Dalton, told the jury she had problems with her "moral reasoning".

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