Meggan was actually raised by gypsies, but it was a non-normal upbringing.
She had powers from birth so on a cold night she freaks out her parents by sprouting fur. THis gets around, and because Meggan is affected by others thoughts about her, the freak child rumor makes her more and more freakish. So she has no normal interaction with people, just watches TV and she has a non-traditional body type.