In "Childe Harold", Lord Byron depicts the character as an individual with attitudes not proper for a knight despite his formalized attempt of becoming one. Although Byron implies that the story is based on true events, as many of the parts of the story make allusion to Byron's life, he stated that it was not meant to be an autobiographical novel, as he uses fictional characters with whom he disguises the events that happened in his life.
I feel that Margot was unhappy because she wants to go back to earth because she missed the sun. As we know in the story "All summer Days" Margot had come from Earth to Venus five years before the story start while also knowing that in Venus it always rains showing why she had missed the sun and Earth.