Whatever. Good for her. She found something she enjoys doing and is doing it and is apparently making enough of a living at it to keep doing it. I would be very surprised if her parents have been bankrolling her since 2011. I don't think they're that level of rich, especially when I just read that Friday, both the song and the video, cost them around $8000.
Plenty of one-hit wonders go on to a long musical career despite never replicating the success. The unique thing here was that the one hit was loved because of how bad it was. I would also note that she didn't write the song or create the music video she was in for Friday. And she was fourteen. It was basically just a present for their fourteen-year-old because she wanted to be a musician when she grew up and it made her a laughing stock.
I honestly felt bad for her back then and I still do now, so I'm glad she's actually followed her dream and made something of it.