Okay, so after actually paying close attention to her interactions with others for the first time in three months, I've determined that Ms. B is actually an ENfP. The Passive Ne/Fi combination became blatently obvious, and all I had to do was use a little analytical observaton to figure this out. My Ti is satisfied.

Now that I know she's "on my team", I can certainly be friends with her, but the passing curiousity I had is no longer there as strongly as I realize the reason why I hadn't paid more attention in the first place...Ne/Fi as a primary/secondary combo do nothing for me.

*EDIT* And I'll admit, though I was trying to look at her unobjectively, Tallulah and Jen, I was infatuated with the concept. Ah well, se la ve.