I don't know her, I don't know her music, I never hear her music on the radio, and no one outside of ATRL speaks of her. I barely know her full name, so simply put; is this girl relevant...at all?
Yes. Most people who follow (pop) music are aware of her. And the vast majority of articles about other upcoming indie female artists now mention her as a point of comparison.
She's not really known by the general American public yet.
No I've never heard any of her songs on radio. Saw 'Video Games' twice on tv. If it wasn't for the internet, I'd probably wouldn't have a clue about who she it.
if someone is too much talked about in the media and the internet taking some of the buzz people think that he or she is relevant and successful but it's not the case in real life so no