I like this, it's well written and your detail is awesome, it's different from a lot of the other supernatural stories I've read, which immediately perks my interest... can't wait to see where you take it :)
The first chapter is very intriguing. Does she have amnesia maybe? I mean, Sam acted like he knew her. I loved your attention to detail, your descriptions were great. I didn't notice any mistakes or lack of fluidity in any of your sentences. This is really great.