Vikoda is a Meru and was a priestess in training to the goddess Oveirett. She was raised by the Olveirettaan priest Jao. Def-Hemus Crets was an Aumehan slave to a Jihhes, once an atheistic chemical engineer, now a servant to the renegade god Mecide.)
They are enemies, but Crets needs her help because the gods have turned against him for a certain something he did. Spoilers, pffft xD so he comes to Koda for help, after having tried to kill her before.
She's not thrilled, but seeing as she's in the temple of the goddess, she's safe in the Pond of Reflection.