Final answer:
Calypso is upset with Hermes for telling her that she must let Odysseus leave her island. She has fallen in love with him and wants to keep him as her companion. She also feels that the gods are being unfair to her.
Step-by-step explanation:
Calypso is angry with Hermes when he informs her that she must let Odysseus leave her island for several reasons. Firstly, Calypso has fallen in love with Odysseus and wants to keep him on her island as her companion. She is upset that Hermes is taking away the only person she cares about. Additionally, Calypso feels that Zeus and the other gods are being unfair by allowing other male gods to have mortal lovers, but not allowing her to keep Odysseus. Finally, Calypso is upset because she knows that once Odysseus leaves her island, she will be left alone again and will miss his company.