Dreamworld tragedy: victim's family 'traumatised'

The family of a mother who was killed on a Dreamworld ride say they are traumatised and devastated by the "catastrophic" incident.

The family of a mother who was killed on a Dreamworld ride say they are devastated by the incident. (AAP)

The family of Dreamworld victim Cindy Low say they are traumatised by her death as they ask for privacy while they grieve.

The 42-year-old New Zealand expat was killed alongside Canberra residents Kate Goodchild, 32, her brother Luke Dorsett, 35, and his partner Roozbeh Araghi, 38, when the Thunder River Rapids ride malfunctioned on Tuesday.

Ms Low's 10-year-old son survived the ride, as did a 12-year-old girl.

"Ms Low's family was devastated by the tragic loss of partner and mother Cindy Low, who was killed in the catastrophic incident at Dreamworld," the family said in a statement released to the public on Wednesday afternoon.

"The family are traumatised, and kindly request that their privacy be respected as they try to come to terms with this tragic loss."