You can’t help but root for her succeeding. Here mom could use a break from tending after her. It’s a lot more tricky for musicians make money, ever since digital drove piracy to new heights. Perhaps she can improve the pop star appeal (without an agent’s total image makeover) perhaps producing a duets album with original pieces written for the partners, would be be a useful exercise, a partnership with someone providing complimentary skills might make an attractive pop act. Good to see she has experimented in genres and developed other instrument skills instead of doing a Child Music Prodigies tour (she’s 28 now)
Her newest Tiny Desk Contest Entry, June 2021 shows some development of her vocal instrument. Perhaps some pop music hook coaching, like contestants in the Songland TV show got from industry pros, might help one make it big. (they make the refinement of a song seem so easy)