Murder accused Corrine Jackson Picture: Supplied

Cape Town - Murder accused Corrine Jackson used music for therapy instead of seeing her psychiatrist.

She also stopped taking her medication, and then tried to commit suicide a month before allegedly killing her 18-year-old Grade 12 girlfriend.

This was revealed by investigating officer Detective Constable Jackwin Paulse at the Mitchells Plain Magistrates’ Court this week during Jackson’s bail application.

Jackson is accused of stabbing to death her girlfriend, Nadine Esterhuizen, 18, in Colorado Park on September 27.

She is also accused of contravening a protection order.

Read: Alleged satanic killer 'had a history of violence'

‘Lesbian tried to cut off lover’s head’

Police say Jackson tried to cut Nadine’s neck off, after finding a 20cm long and 4cm deep knife gash.

Jackson was found hiding in the toilet with a dagger and a chopping knife.

Police initially thought the teen was killed in a satanic ritual after finding a cup of blood on the scene, but pathologists say the attack was done with too much “severe aggression and anger”.

Jackson claimed she had acted in self-defence.

The accused, who has a history of mental illness, wore a silver jacket and stared almost without blinking at Paulse during his testimony.

State Prosecutor Darren Johnson produced a copy of a psychiatrist’s report and asked Paulse, attached to the Lentegeur Police Station, to read extracts.

“Miss Jackson has defrauded her attendance and didn’t attend her sessions,” he read.

Paulse said he had interviewed Jackson after her arrest, where she admitted she was “treating” herself.

“She would rehabilitate herself by listening to music and didn’t want to take her medication.

Also read: Alleged 'Satanic ritual' killer and lover were engaged, court hears

Murder accused 'showed extreme anger and aggression'

“While I took the accused to hospital, we spoke and in conversation she said a month prior to the incident she wanted to kill herself and said her mother was trying to help her, but she didn’t want help,” he says.

Paulse said Jackson was a poor candidate for bail because she was mentally unstable.

During Wednesday’s proceedings, cops searched Jackson for a cellphone after it surfaced she had been posting on Facebook.

No cellphone was found.

Jackson’s Facebook page was last updated on 9 October, three weeks after her arrest.

Two days before Nadine’s murder, Jackson quoted lyrics from Queen’s Bohemian Rhapsody, and posted: “Mamma...I just killed a man.. The most brilliant song ever.”