Read it through once

“As night came on, Agatha and the Arabian retired early. When they separated Felix kissed the hand of the stranger and said, ‘Good night sweet Safie.’ He sat up much longer, conversing with his father, and by the frequent repetition of her name I conjectured that their lovely guest was the subject of their conversation. I ardently desired to understand them, and bent every faculty towards that purpose, but found it utterly impossible.