what happened to her career?

Seriously, what happened to her? She did True Grit, in which she displayed a good, if somewhat overrated performance. Nonetheless, the role got her massive critical acclaim and buzz and she even landed an Oscar nomination so why hasn't she done anything noteworthy since then(other than Ender's Game, I guess)? She clearly has potential, and was quite strong on Hollywood's radar for a while, but she seems to have just faded off in the field of acting and seems more interested in becoming a mediocre teen pop artist instead. Seriously, Hailee, just what and why?