Elfspirit - The Elfmoon Trilogy, #3

Taryn Malloy, Bright Elf living in a human world, knows there is something missing in her life. All her life, Taryn has refueled her powers with sex and lust, the life-giving forces her people have managed to find in the human world. Fallon, the mysterious green elf, has been walking Taryn's dreams, showing her a world that once was, that may still be; if she can find it, reawaken the true magic inside of her.
Taryn sets out to seek the land of her people, to open the gateway between her world and the Iron World of the Humans. If she can, Taryn will refuel their true magic and restore balance to their lives. Taryn will dance for the joy of dancing, not just to refuel her magic - she can stop the struggle to just survive, she will truly live again.