Currently in a box set, Fierce and Fated.
As a bastard, Kyra has spent her entire immortal life hiding from the powerful Demon Lord her mother betrayed. Half a century later, she’s about to tap into her demon powers when she stumbles upon Marek, a Wyvern shifter being attacked by a pack of demons.
Kyra gets caught in the crossfire, and before she knows it an illegal portal is created between the worlds. Demons don’t stop coming through the portal and the only person who can stop the havoc is Kyra.
Not how Kyra expected to spend Christmas eve.