Why does Antigone think her family has suffered mistakes in

Antigone believes her family, the house of Labdacus, has suffered mistakes in judgment because of a generational curse brought upon them by their ancestor, Cadmus. Cadmus slew a sacred dragon who guarded the spring of Ares and sowed its teeth, from which sprung warriors called the Spartoi. As punishment for this act, Cadmus and his descendants suffer misfortune after misfortune.

Antigone recognizes this hereditary guilt and knows she cannot escape its fate. She laments her family's tragic circumstances but feels compelled to honor her brother Polyneices by giving him a proper burial, even though doing so defies Creon's edict and carries significant consequences. In Antigone's view, it is worth incurring such punishment in order to uphold the unwritten laws of the gods and appease the restless spirit of Polyneices, ensuring peace after his untimely death.