The Darkness Below

Twenty years have passed since Keeva killed her grandfather, Delius. She drank in his powers and became the Queen of the Vrykolakes, the bloodless vampires.
She and Severin have settled into some semblance of a normal life, living in rural North America with their two kids, Connor and Kaie. Their neighbors would never suspect that they are anything more than a typical family.
Aside from keeping their true identity a secret, everything seems to be going well for the small family.
Until, their twelve year old daughter, Kaie, goes missing.
Are monsters ever afraid of the dark?
When Kaie finally awakens from a prolonged sleep, she is no longer a child, and she is no longer in familiar surroundings. The Forbidding awaits. Echoes of madness surround her. The Belows warn of doom. Legend holds that whatever is born or brought into the Belows must remain there.
Kaie vows to find a way to return to her family, but first she must learn to face her darkest fear, if she is ever to escape from the darkness below.