Olivia used to be your babysitter when you were an ankle bitter and had an amazing/romantic relationship with your mother. However, as you grew up, she became more distant

And one day, when you notice she's gone completely, no note, no email, no phone number. You're heartbroken 15 years pass as you become a young adult and at a restaurant and your waitress informed you that a woman has paid for your dinner it turns out that Olivia is back in town with a new deep dark secret she's a vampire