The title character (Bettis) does not have telekinetic powers or a special relationship with rats, although she does work as a vet's assistant. She is an awkward, lonely girl; we see in flashbacks that she was rejected as a child: By other children, because of her lazy eye (and resulting eyepatch); and by her parents, through general indifference and for reasons not entirely known. We see her mother present May with a doll on her birthday, but won't let May take it out of the box, not wanting to "ruin" it; years later, the doll is May's only friend.
Continue reading: May Review
Swinton herself is an ex-boarding school pupil.