She has a semantic linguistic mistake. She made a mistake not knowing the full meaning of the word candy.
Explanation:
Linguistic mistake is an involuntary mistake or failure to use a system properly because sometimes candies are also called sweets or lollies.
Candy is a general form of defining sugar based confectioned with syrups, chocolate, fruits and carbohydrates. Chocolate bars is an example a candy, because there is a high content of sugar to reduce the bitterness of the chocolate. Candies are also not considered to be food because of their low nutritional value.
