Let's not forget that she's a pop artist and whatever she is going into, this tag will probably follow her forever. Her punk-rock grunge tag is gone since TBDT and there is no way for her to do a comeback and get back the punk rockers on the fanbase. I think the type of music she's doing right now is a good mixture between rock and pop, soft and hard emotions, and a good mixture between teen and adult music as well. which is perfect to get a large audience. In the end, If she goes in another direction (dance or metal), I am sure she will brilliantly do it anyways! She will loose some fans but gain others. And I know she will work it out fine. She already make her mark, She won't fade that easily!