What's the name of the vampire book of short stories?

One short story involves a disabled little girl who becomes terrified of her neighbor, whom she believes is a vampire. She expresses her fears to her older sister (also the narrator), who is naturally doubtful, but agrees to look into it to set the girl's mind at ease. The ending reveals that the neighbor is not a vampire, but the older sister is. She feeds on the neighbor and then expresses her intentions to wait around for her sister to reach her age, and then turn her, as vampirism will rever

se her disability.

The other stories were mild as far as I remember. One vampire just craved rare meat.