In a statement yesterday afternoon, Shotover Jet general manager Clark Scott said the girl had remained in hospital for ''precautionary reasons'', but had been discharged and was continuing her holiday with family.
''We understand she's on her way and doing well and we will continue to provide whatever support she and her family may need,'' Mr Scott said.
The company was ''very glad'' to hear the news, but was not in a position to comment further or provide more details.
Maritime New Zealand (MNZ) was investigating the incident and river operations were continuing as normal.
Five passengers, including overseas visitors, were injured in Saturday's incident about 4pm when the boat hit a rock as it passed through a narrow canyon on the Shotover River.
The girl was airlifted to Lakes District Hospital and then transferred by ambulance to Southland Hospital, in Invercargill, with suspected back injuries.
The other four people sustained minor injuries and were released from Lakes District Hospital on Saturday.
Mr Scott said on Sunday the company was confident the incident was ''not mechanical'' and resumed operations that day after clearance from MNZ.
Damage to the boat was ''pretty minimal'' and it was driven back to its river base.
While the driver, who has been stood down during the investigation, had taken other trips on Saturday, Mr Scott said the company did not believe it was a fatigue issue.
Shotover Jet, owned by Ngai Tahu Tourism, is the only company permitted to operate in the Shotover River canyons.
Last April it carried the Duke and Duchess of Cambridge during their tour of New Zealand and Australia.
