How did Demeter find her daughter when she got kidnapped?

Demeter found her daughter, Persephone, after searching the earth for nine days and nights, refusing to eat or drink. During her search, she encountered Hecate, who guided her to HeliOS, the sun god. HeliOS revealed that Persephone had been taken by Hades to the Underworld. This revelation prompted Demeter to take action to ensure her daughter's return, ultimately leading to the arrangement of Persephone's seasonal cycle between the Underworld and the earth.