Lust for Dracula (2004)

Mina is a young woman wed to Hollywood pharmaceuticals mogul Jonathan Harker. Mina wants to start a family, but is shackled by her man/woman husband. Mina soon meets Countess Dracula who gets her a shot in the arm. Soon Mina's a vampire herself, until her sister, who's intent on stalking and killing Dracula, threatens Mina's newfound happiness for the same sex.