"The hook came back and hit her in the face," said her father Peter Greybrook, of Adelaide. That nearly fatal accident happened in February 2009, and she had complained of headaches since. In March 2010, after numerous surgeries, doctors had to remove her eye, and it was eight months before she received a prosthesis. But on the morning of June 4 this year, aged 49, she suffered an aneurism, and didn't wake up.
Doctors have told the family her death likely stemmed from her accident.
A distraught Deneice Greybrook, Karen's mother, said: "Our happy, beautiful young girl, to lose an eye, she wasn't really coping. She put on a good front, but she was getting so much pain."
Deneice, who spent six months helping Karen care for the big cats at Zion in 2003, said her daughter had never recovered from having to leave Zion and her beloved felines.
"It destroyed her ... She had no children of her own - they were her children," she said.
Meanwhile, the Ministry of Agriculture and Forestry is working with receivers, PriceWaterhouseCoopers, to ensure the animals at Zion are properly cared for. MAF has said, if the park were to permanently close, it would secure the animals' future either locally or internationally.