You think she's an introvert? I think she is an NFP, as I see clear Ne, but I lean towards E. Although, the way she talks about her jewelry reminds me of myself.
I'm surprised I don't dislike her either, but I find her passiveness annoying at times. Her anorexia garners sympathy from me. I see it as perfectionist tendencies. You kind of look at her and know that deep down, she knows she looks ill, but she's too scared to get fat because it's at odds with her ideal.
I think her husband stabilizes her. He must be a decent guy to stand by her despite being a skeletal workaholic.