A four-year-old girl who was injured when the car she was travelling in collided with a train at a level crossing has died in hospital.
Emma Lifsey had been airlifted to Sheffield Children's Hospital after the incident in Nottinghamshire on Tuesday.
A British Transport Police spokesman said "she was sadly pronounced dead in the early hours Wednesday".
The other person injured in the crash, a 67-year-old woman who was driving the car, remains in hospital and is in stable condition.
The girl's parents, Mark and Zoe Lifsey, said in a statement: "Emma meant the world to us. She was our much-loved daughter and a baby sister to her 11-year-old brother Jack.
"We are still trying to come to terms with the terrible incident on Tuesday afternoon and there are no words that can properly express how utterly distraught we are."
The couple said they were thankful for the support received in the aftermath of the incident, but sought privacy at a time of grief.
They added: "This tragic incident has left us shocked and devastated and we would ask that we can be left to grieve in private at this acutely difficult and sad time for us."
The woman travelling in the car, a black Volvo, sustained serious neck injuries and bruising.
Police were investigating the accident, and said they would talk to any witnesses while experts examine evidence from the scene and the car.
The train, a Lincoln to Doncaster service, was damaged but remained upright and on the tracks. No injuries have been reported among passengers or staff onboard.
Speaking at the scene on Tuesday, Inspector Andy Selby of the British Transport Police declined to comment on whether the barriers and lights at the unmanned crossing were working correctly.