Autumn's style sits somewhere between Gothic and "Steam Fop" with a touch of Otaku-friendly style. The songs on Opheliac are predominantly dark and tend to be heavy on suicide and child abuse, as well as songs like "Thank God I'm Pretty" which are a tad more ironic and/or attacks on society.
I do have to wonder a bit about her intent. She is a pretty talented violinist and singer, and her music is generally well produced... though at times it feels like pandering to the socially awkward. I guess a similar claim could be made regarding most pop stars, be it Lady Gaga or Amanda Palmer. Certainly she is not cranking out material like mad; only two album releases since 2003. But at her website the first thing I noticed was the link to her biography at her web shop, and a large "Get Shopping" link. Obviously she needs to support herself as an artist, but this kind of marketing seems at odds with the fringe persona she portrays. Conversely, her web shop is a disaster, filled with "Coming so, so soon...please check back!" mentions that lead me to believe the shop is necessary, yet an afterthought.
Regardless, I like her music and if her baring of soul is merely a character, well she would not be the first and at least the character is interesting.