her person

For the first time since I started this blog (so, okay - a book and a half), Betts uses the phrase "her person" (as in, "Amabel was conscious of a warm glow deep inside her person", p. 116). I always find this phrase amusing. Of course, I know what the phrase means, but to me it always sounds as though she's got a minion. Better yet, the "doctor's large person" comes through the door a few pages later; does he have a small person, too? Who's Amabel's person? How did she get one, and where do I get one?