Heh. Hmm, interesting. And I agree with what you said about fraud being creepy.
I think Bird was an ISFP. Very literal, attention to aesthetics, concrete, world-bound. I do think she had Ni as well, but don't think she led with it. ISFP would explain the initial INFJ typing - Fi can be just as cold and driven as Ni, in some ways. Of course, this is a quite uneducated guess as I barely knew her. But based on others' dealings with her, and dealings with ISFPs, and function pattern and posting, etc, it seems possible.
Definitely, Fi can be cold. Quite scary, really. Cos it's so individual and so convinced it's right and so unconcerned with what the rest of the world thinks.