Audrey lies about her age to get into school

It’s a normal school day.
Fiona’s at the front office, chatting with Andrea, the school secretary, after having dropped Lucinda and Ethan off.
Audrey:I want a school bag.
Fiona: You know, Andrea, Audrey really cant wait to get into school. Her brother and sister go to school, and she wants to be here too.
Andrea: Audrey, how old are you???
Audrey: (looks down and to the right) … FIVE.