A woman stabbed her partner in the neck after she was made mentally ill by smoking skunk weed, a court heard.

Roxanne Osbourne, of Albert Road, Dagenham was warned by a judge never to touch pot again after she shouted: “I’m going to kill you and kill myself,” as she plunged the knife into Richard Keye.

The 26-year-old was at her boyfriend’s home in Reede Road, Dagenham, in June when she began acting strangely.

Osbourne woke him a number of times during the night asking him to pray with her, to have a cigarette with her and also accompany her to toilet.

She snapped when he refused to get up with her at 5am and instead pulled the duvet up over his head.

Osbourne lunged at him and stabbed him in the neck with a small kitchen knife. He wrestled her off before she could strike again.

She was originally charged with attempted murder after telling police: “My partner was being rude to me so I stabbed him in the neck.”

But psychiatrists found she was incapable of forming the intent and she was sent to a mental hospital after pleading guilty to assault occasioning actual bodily harm.

The Old Bailey heard that Mr Keyes’ landlord found him sitting clutching his neck when he went to investigate the noise coming from his room.

Osbourne will handed a hospital order under section 37 of the Mental Health Act 1983 on Tuesday last week and will be transferred to the John Howard Centre in Homerton, for treatment.

Psychiatrists cited her use of skunk cannabis as being the trigger for her paranoid schizophrenia.

Judge David Radford warned “Returning to using cannabis as someone with your diagnosis would be utterly against your interests.”