She was swallowed by her father

Greek mythology states that Cronus ousted his father Uranus and established global control alongside his wife Rhea. He was informed, nevertheless, that one of his offspring would eventually topple him just as he had done with his father. Hera was one of the many kids Cronus had with Rhea and he swallowed her and the rest of the babies right away. But when Rhea gave birth to her sixth child, Zeus, Rhea begged Gaia to show her the way. Gaia told Rhea to go to Crete to give birth and then wrapped a diaper on a stone to give to Cronus, replacing the newborn Zeus. Cronus was fooled and swallowed the stone whole.

When Zeus reached adulthood, he impersonated an Olympian cupbearer, poisoned his father's wine, and then deceived him into drinking it. Sure enough, Cronus vomited everything in his stomach, including the stone disguised as Zeus. After that, Zeus' brothers Hades and Poseidon, as well as his sisters Hestia, Demeter, and Hera turned against Cronus. Zeus then engaged in combat with Cronus and the other Titans alongside his brothers and sisters, the Hecatonchires and the Cyclopes. He won the battle and deposed Cronus. Cronus is finally imprisoned in the abyss of Tartarus. Hera later became Zeus's wife and ruled as queen of the gods over Mount Olympus.