Cora's choice vampire series 1-2 by V.M. Black [epub,mobi]

Life Blood (Cora's Choice #1):

She wanted life. He needed her blood.

Cora Shaw will do anything to live. Diagnosed with terminal cancer in her senior year of college, she is given a choice: Call hospice, or seek out a mysterious man who promises an impossible—and insanely dangerous—cure.

She knows him only as Mr. Thorne, a reclusive billionaire who seems full of contradictions. A man with strange, impossible powers over her.

A man, she discovers, who is not a man at all.

In the first book of the Aethereal Bonds series, Cora makes a deal with a devil—and gets more than she bargained for.

This 23,000-word book initiates Cora into a world she's never imagined—and may never escape. It is the first of the Aethereal Bonds series.

Blood Born (Cora's Choice #2):

He wanted more than her blood...

Cora Shaw discovers that the cure for her terminal illness comes at a terrible price: She is now eternally bound to an immortal vampire, her mind and body forever subject to his will.

All she ever wanted was to be rid of her cancer. But how can Cora break free from Dorian Thorne when everything in her wants to give herself to him and when Dorian has sworn never to let her go?

Through her new blood-bond, Cora is thrust into a world of great danger and strange powers. Running for her life, she knows the only one who can save her is the one who will never set her free…