By Tim Brown of RNZ

The mother of a Canterbury baby who died of catastrophic head injuries has broken down in tears as she claimed she struggled to recall the morning her son was injured.

Soul Turany was less than four months old when he died in 2014.

No one has been charged over his death but police have said either his mother, Storme Turany, or her then-partner, Tony Farmer, is responsible.

Turany broke down in tears at an inquest on Thursday morning as she struggled to recall the events of the day Soul was grievously injured.

"I just want to be able to help as much as I can but I know I'm not," she told the inquest, tearfully.

"I want the answers as much as you do."

Coroner Ian Telford is examining the circumstances of Soul's death during a two-week inquest in the Coroners Court at Christchurch.

Storme Turany returned to the court to give evidence on Thursday morning after spending all of Wednesday on the stand.

The coroner advised Turany of the privilege against self-incrimination before her…