Treble specialises in separation and divorce matters as well as providing strategies for comprehensive wealth management, including superannuation advice.

Admitted to the Supreme Court of NSW in 1985, Treble practiced as a solicitor for 13 years, including a stint for the Director of Public Prosecutions before establishing her own general legal practice. She also lectured in law and business management at Southern Cross University before moving to Brisbane in 1999.

Treble established her own financial planning business in 2006 which has now grown into legal and financial advisory services.