The most likely outcome with a career in art is living close to poverty.
I am not reading horror books for a job either, despite spending awful lot of time with it as a kid and teenager.
If you can bear the thought of doing some other work, then getting a decent paycheck and having art as more of a hobby or side venture may be much more fulfilling. (And frankly, most people I know in the arts do all kinds of side jobs to pay the bills, anyway.)
She can happily take over as managing partner of my firm if she wants and cash out or use that expensive school education to get a top job and learn to FIRE early; she has options.