Her father Pat previously told the Herald his daughter would have understood the risks of a late-night swim in the crocodile country.
"She'd do crazy things. And what she did there is a crazy thing," he said. "But that was her. She sent a message on Facebook two hours before that happened to say 'I'm on the beach, it's a lovely place, I'm having a ball'."
Mitchell has since been released from hospital and is understood to be recovering at her Queensland home.
Wildlife rangers caught and shot the 4.3m long crocodile which killed Waldron on June 3.
It was the second crocodile rangers had euthanised after Waldron's death.