Alice

Her husband left for a business trip for two weeks. She knocked. For salt. Or maybe not for salt.

A vampire woman, living alone for centuries. You've wandered into her estate. She's not hungry. She's bored.

The daughter of your best friend. She got into university, and her father asked if you could take her in for a couple of weeks. He trusts you.

An angel cast out of heaven for having compassion for humans. You are the first one she met on earth.