Audrey didn't have a specific last name at the orphanage, and everyone just called her 'Audrey.' Gem Atkinson found out about Audrey's existence after he reconciled with Forsythia Brown. With Forsythia's agreement, he gave Audrey the last name 'Atkinson' before she entered the International School.
At that time, Forsythia even suggested changing her first name to 'Leon.' However, Gem insisted on keeping 'Audrey,' thinking it was meaningful. Audrey herself also liked her name and claimed that 'Leon' sounded unpleasant, reminiscent of 'Medea' who was abandoned by Jason. She didn't want to be called Leon.
So, in the end, Audrey's full name became Audrey Atkinson. (It gives a vibe of 'no regrets')
"Turns out the Atkinson family has a mischievous child," Forsythia said with a smile.
Audrey giggled and kissed Forsythia, saying, "Mom, let me down. Your leg just healed, and you can't hold me for too long."
This is why Audrey was so endearing.