Several of you mentioned that INFJs are more into serving the community, but as an INFJ myself (and having looked up to Amy Lee/Hartzler for as long as I can remember, not only as my primary idol but as someone I would love to sit down with and talk to), I can pretty confidently say that not all INFJs base their lives on "service" as many would define it. Many of us are writers, musicians, designers, and artists of other forms—but to us, this is a form of service. We are sharing a deep part of ourselves with the world. We are giving our emotions up to our listeners, readers, viewers, that they might appreciate our work and feel something. In interviews, Amy has mentioned people coming up to her and telling her that this or that song of hers changed their lives, inspired them, saved them from depression, and this touches her more than the cheering crowd.
One of the reasons I found this thread at all was that I recently discovered my identity as an INFJ, and like most INFJs, I latched onto it and have been looking into it ever since. Amy Lee is and always has been my favorite "celebrity" because of how much I have connected with her, and how private and personal and emotional and almost nerdy in the most wonderful of ways she is, and it only just occurred to me to look up her personality type to see if I wasn't the only one who felt this way. The fact that she is not only a passionate musician and lyricist but a designer and painter, married to a therapist (INFJs are very selective about who they choose for a romantic partner, and one of the main things we need for a relationship to work is for our partner to be deeply thoughtful and caring, which a therapist would certainly be), the fact that she doesn't want to be limited to Evanescence so she recently composed a score, AND that she was an important figure in the epilepsy awareness campaign Out of the Shadows, says to me that she is almost certainly an INFJ. INFPs are dreamers, idealists (not that there's anything wrong with that—I love INFPs). But Amy Lee is very much a creator, a fighter, and a doer. I vote INFJ.