she wasn't a tourist mate, she was a local. she should know about Australia's strict biosecurity rules and if she didn't then the questionnaire she completed before arrival should have given her pause to think about what was in her bags.
but some people don't like to learn new things as I found out growing up down under. the only things some people take seriously are the lineup of their footy team and which is faster, a V8 Commy or a V8 Falcon ????