Terri Irwin, who is raising Bindi and her nine-year-old brother Robert at their Australia Zoo on the Sunshine Coast, said her daughter was less than impressed with the response from the US State Department.
"It's interesting that she was asked to write an essay about the environment and included the consideration of population (growth) and they returned her essay edited and completely edited that out," she said.
"So Bindi wrote to Hillary Clinton's organisation and said 'what happened to freedom of speech? This is my opinion and I don't want that edited out'."
The tough-talking teen – who onscreen has freed Willy, fought pirate animal poachers and hosted Bindi's Boot Camp – pulled the essay from the publication in anticipation of a response.
Writing An Essay About The Environment And How We Can Improve It