How can you tell if your girlfriend to is a dracula? When I first met her I thought she was a goth.?

I do accept her and she is vietnamese, so I have an Asian girlfriend. I am afraid of her sometimes. I found something weird in her room, it looked like it used to be a person, but it was all hollow. She found me freaking out about this possible corpse, and did something to me. It looked like she was touching me inside my head. I woke up a day later to her caressing me in my own bed. She said I had passed out. And had been rambling and hallucinating. She actually seemed concerned, which was strange as she is very cold emotionally. I didn't hallucinate anything. I can't explain what is happening. I have tried to leave her. But she comes and finds me no matter where I hide. She makes me weak and I pass out only to wake in her room or my bed with her holding me down, telling me I am dreaming or making up all these strange things. I need help but no one will take me seriously. Right now she is sleeping, but soon she will awake and I am scared.

I don't really believe in draculas either, but I can't escape from this person and I think she is doing something evil. I told my brother about it last week and no one has heard from him in days. I told the police about my suspicions and I nearly got taken to the hospital. I am out of time, she is planning something. I know she has killed at least one person, and I fear there are more.