The oral histories of the ancient world did not survive. The Royal Library of Alexandria, which had the largest collection of books and writings of the ancient world had been destroyed by 28 BC. Two other libraries, probably public libraries survived--Serapeum and Cesarion temples until later.

Yes, Cleopatra is known to have initiated several building projects and monuments during her reign as the last active ruler of the Ptolemaic Kingdom of Egypt. Some of her notable projects include the construction of the Caesarion Temple in Alexandria and the restoration of the Serapeum Temple. Cleopatra also added to the Ptolemaic Mausoleum and built a palace in Alexandria known as the "Royal Palace".

Under pagan Roman Emperor Aurelian, in A.D. 272, the greater part of the Brucheion was destroyed, and it is most probable that the library perished at this time, though Caesar had probably burnt some books for fuel being transferred to Rome earlier.

The small library in the Serapeum is supposed to have perished when the temple of Serapis was destroyed by Bishop Theophilus, but there is no definite statement to that effect.

http://www.newadvent.org/cathen/01303a.htm