According to Greek mythology (primarily Hesiod's THEOGONY), Hekate was born of the Titans and was considered a Titan herself, but in the war, she sided with Zeus and the gods against the Titans. As such, Zeus allowed her to retain her full powers over land, sea, and sky.
In Homeric Hymn #2 (Hymn to Demeter), we are shown that Hekate is a young maiden, not the crone that later demonization of the gods turned her into. She is a friend of Persephone's and actually guides Persephone as she makes her journeys to and from the land of Hades. Hekate carries two torches, making her "the light in the darkness" that moves from world to world. In addition, she is Persephone's proxy queen during the time that Persephone is in the upper world.
In ancient Greece, Hekate was one of the most popular deities in daily folk practice. As the guardian of thresholds and passages of all sorts, she had a shrine or at least an iconic representation in almost every home. While she is known as a goddess of magic, most call upon to protect them from dark magic or bad luck.
She is not ill-disposed toward humans at all, but does tend to keep herself somewhat distant, even from those who are devoted to her. She helps her followers, but only after they have done all they can on their own and have shown that they are making the strongest effort they can.