She builds off of the sounds and momentum of Lorde and Lana Del Rey (who in turn build off the momentum of artists before them). Which has helped propel her even further than either. Her sound is both pop and very edgy. Sort of Goth pop. Perfect for moody tweens and even moody Gen Xers like myself.

Her first full album is the best IMO, but the new one has some magic on it.

Also, talent wise instead of having teams of song writers and producers and musicians (like Beyonce et al..), her albums are made by just her and her brother in their home studio. And that in and of itself deserves much respect.