"If you've got an inquisitive cat, it will find its way through."
She empathised with their owners.
"We're animal people, and we know that people love their pets. We feel terrible for the people who this happened to," she said.
Henry's owner, who did not want to be named, told Fairfax the zoo had called to break the news.
"My husband took the call, and I instinctively knew it was about Henry," she said.
"I asked if he was alive ... and he shook his head. I just burst into tears."
The woman told Fairfax she had emailed zoo staff about gaps in the zoo fence, months before Kobe's death.
"We thought that they would at least put a netting behind it but nothing happened," she said.
"I would be mortified if our cats got into the kiwi or penguin enclosure, none of which is fenced off, and attacked their wildlife. So, I don't know why it's not a priority for them."