Sabrina Sabir laughed, "Girls will be girls, Isla. Even though you can make money, your driving skills pale in comparison to your cousin's! His handling of that little car is impressive!"
In essence, what she meant was that girls would never surpass boys.
Isla Astir is exceptional: she has a car and a house. However, she will eventually get married and then, wouldn't her wealth become her husband's?
After pausing, Sabrina continued, "Your cousin is incredibly handsome and he's studying for graduate school entrance exams. I heard many of the girls at his school are infatuated with him!"
Isla's focus was on the road up ahead - after all, she was a novice driver. Hearing her aunt's words, she had to play along and say, "Yes, my cousin is incredible!"