ABC Online | Life sentence: WA teen jailed for stabbing murder of stepmother WA today A Perth teenager who was on drugs when he fatally stabbed his stepmother as she kicked him out of the house has been jailed for at least 17 years. Catalin Alin Borbil was 19 when he murdered Sally Kaur, 57, in her Koondoola home on December 5, 2013. Meth user's 17-year term too long: dad Koondoola man sentenced over 'brutal and unrelenting' murder of stepmother Teen jailed for step-mum's 'brutal' murder |