I went back and forth on INFP or INFJ for Jane also....she seems to have these premonitions in her dreams, which says Ni to me, but her general behavior says Fi to me. I agree that her tendency to defy and not mince words seems Fi over Fe.
I think Mr. Rochester is an ENTJ, and INFP for Jane would probably make more sense for their match then INFJ would. Their dynamic reminds me of myself when I banter with a guy I like. I always make sure I cut them down to size and keep their ego in check, but in a teasing way