One of the teenagers seriously injured in the Alton Towers crash is expected to make a "substantial claim for damages" and expects a criminal prosecution to be seriously considered, her lawyer said.
Vicky Balch, 19, from Leyland in Lancashire, remains in a "critical condition" in hospital, according to Paul Paxton, partner at Stewarts Law.
He said: "Whilst it is anticipated that there will be a substantial claim for damages to support Victoria in her recovery, the main focus at present for the family is Victoria's well-being and ensuring that the investigation into the accident is carried out swiftly and vigorously.
"They have every confidence in the police and the Health and Safety Executive (HSE).
"It is expected that serious consideration will be given to criminal prosecutions. The family are distraught that a fun day out could turn into such a potentially life-changing disaster."