None of the above. She is a concentrated push by her label with a long build-up.
They were investin in her for a long time. They have at first build up a fanbase which costs a lot of money. They shot high budget videos despite her charting nowhere with her singles.
So, her numbers ain't suprising since she was constantly pushed over the time. The build-up was for the album release to cash in.
The music, that actually should matter however, is damn awful