Thanks for that link! (as well as for the fill. :) Did I say thanks properly, or just exclaim how much I liked it?) Yes, it's a great play partly because of all those mistinesses; I love the way it seems endlessly open to reinterpretation (which is why directors love it, of course). Her line, I suppose, is discussed and the backstory thrashed out differently for every production, though it seldom shows overtly. (They need your scene!)
Re: Such a heart in my bosom