The Fire Queen by Jovee Winters

Forgotten by nearly everyone she’s loved after the curse struck Kingdom, Fiera does what any proper fire goddess should do, she gets back to work. But in her heart an emptiness has begun to grow, pulling her deeper and deeper in reclusion. But there is one who still remembers, one who will do anything to bring the fire goddess some measure of joy again, even if that means sending her to a literal world of icy hell to do it…