It's completely amusing to me.
I've never really gotten the impression of her being scattered, except as Prof Trelawney and Kay Eiffel. Her roles in Howards End, W;t and Sense and Sensibility pretty much cemented the INTJ impression for me. She plays these roles with a gravity that's unnaturally natural, and with her more scattered characters she seems to be "letting herself go". My impression of her is that she's a very controlled, very aware actor.