Giving up My Humanity and My Servitude to a Vampire

Emilia Halo Johnson lives during the Great Depression of the 1930's. She has three brothers and one sister: Jacob(13), Daniel(10), James(9) and Olivia(6). Emilia loves her family to death and does anything she can to feed her brothers and sister. Her mom was an alcoholic, and I mean 'was' because she just died and right after her mother's death her father, whom abandoned them, came back with a job offer with a rich family. Emilia accepted and now works for the Heart-stein family; but what she doesn't know is that her father and all of the Heart-stein family are vampires.
And what will happen when the Prince of Darkness falls in love with her? Will he tell her his true identity and lose her forever?