You can read the story in full in the work, Golden Ass. Psyche did not want to leave her family to meet her new husband (Cupid). This is reasonable, because she was very close to her immediate family. Her family did not want her to go as well. And when she got to her new husband she was also very lonely. She, therefore, persuaded Cupid to allow her sisters to come. When they got to Psyche, there were very jealous of all her riches and good fortune. They persuaded her to find out who her husband was, since Cupid explictly told Psyche that she must never know who he is. Unfortunately Pscyhe follows the advice of her sisters and fall from the good favor of Cupid.
In this myth, Psyche is very unhappy to be going to meet her intended husband. After all, her intended husband was a fearful winged serpent.
Her family is even less happy than she is. They are all dreadfully sad and she is trying to cheer them up. She tells them that what was really sad was that the gods were jealous of her beauty. But they were still in despair -- the author says they were sadder than they would have been if they were bringing her to be buried.
So once she is up on the mountaintop, Psyche is very afraid -- she cries and shakes with fear.