It's not a question of whether Lauren Dickason will receive life imprisonment, but rather how long her non-eligibility period for parole will be.

The 42-year-old has been found guilty of murdering her three daughters at their Timaru home in 2021.

Dickason pleaded insanity, caused by postpartum depression.

Massey University Law Professor, Chris Gallavin told Mike Hosking the base level non-parole period is a decade, but a number of aggravating factors can increase that.

He says she could be facing up to 30 years.

Dickason has been remanded to Hillmorton Hospital before sentencing.

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