She later wrote a letter of complaint: "I'm a 39-year-old mum of three who is, by and large, a pretty decent, tolerant human being. I'm also not a prude in any shape or form. I generally believe in freedom of speech, and the right of humans to do whatever they want behind closed doors as long as it's between consenting adults, ya know? However, I wanted to report an incident which has left me saddened and confused.
"I am pretty saddened that my daughters have been subjected to these images at such a young age and so unnecessarily. A simple lock system would have ensured that they didn't have to see what they sadly have now seen."
Mrs Ault found it hard to believe Dick Smith did not have a lock on its computers to prevent people from accessing inappropriate websites.
"I believe it's imperative for the retailers of devices that have internet connections to be aware of this and safeguard their content and also parents should tread carefully when entering any shop where internet is available," she said in her letter.
In response, Dick Smith offered Mrs Ault a $20 store voucher. But she was still "outraged", she said, and felt the store was being "blasé" about the situation.
Dick Smith's general manager of marketing, Francois Smith, was surprised to hear about Mrs Ault's experience and told the Weekend Herald he would look into the matter.