Complex sentence: The Princess pleads with Jaffar to return her to Basra, and he does so willingly; she implores her father not to force her into marriage, and the Sultan promises he will not let Jaffar have her.
Split into simpler sentences: The Princess pleads with Jaffar to return her to Basra, and he does so willingly. However, she implores her father not to force her into marrying Jaffar, and the Sultan promises he will not let Jaffar have her.