Alexandria Egypt, where sister cleo used to live-had at the time up until Caesar's tryst with her. . . .the finest library in the world. it burned down, and Alexandria later fell into the sea.
I'd imagine that Cleopatra, thinking herself a Goddess.. . . well, despite that, she was probably one of the more educated persons, male or female, in the world at that time. You know she had to have had the most intelligent people in Egypt as teachers, etc.