Looking for story where Charlie & Bella are descendants of a vampire. I think Charlie's an 1/2 & Bella's an 1/4, or they could be 1/4 & 1/8. They are being hunted. I think Bella has a power. I think a grandmother is involved somehow? Or, a Quiluete woman delivered & saved Charlie & raised him on the Rez? Don't even remember if I'm mixing plots or not. Can you please help me find this? I read it years ago, but can't remember enough details to find it again.