Oh Kelly you are not being mean spirited at all! I've had quite a few of these one-sided "friendships" over the years, they suck the life right out of you . You've already given her as much support as you can. I know how hard it would be for you to tell her that you need to end the friendship so maybe just ignoring her calls will give her a hint. In my experience though i've found that people like this don't really take a hint . I just hope she doesn't show up on your doorstep, yikes!