Mambo’s Door by Delilah Devlin

Ingrid Kassel is a fledgling witch, uncertain and not in complete control of her powers, especially after drinking a double-shot of vampire blood. Charged with retrieving an object buried with a daughter of the Voodoo Queen—she angers the spirit guarding the tomb and finds herself entering a shadowy limbo, where she meets beautiful Marie, living in fear of a demon who also desires the black magic candle infused with the powerful mambo’s blood.
In desperation, Marie tricks Ingrid, capturing her and seducing her to charge the candle for her own bid for freedom.