Instagram followers? Lol. I'm a 30-year-old single woman with no kids. I get one or two hearts on Instagram once I post a pic.

Totally understand. My daughter dropped out of High School senior year. Five years later hasn't tgone for GED. Waiting it out.

That has an odd ring to it in that “the age of social media” screams education, well beyond HS, be it academic or IT. Would it be possible to (subtly) sell the “glamorous” idea of college, possibly joining peers that appreciate how valuable education is for her tomorrows.
Tough love may have to be introduced in some form.
Good luck.

Pizza or fast food?

Tell her to start looking for a job now.

This is hard. She's at the age where parents don't understand and you can't tell her anything. I would only intervene if she seems to be hanging with a crowd that will put her in danger but other than that you are doing your best. You may just have to be her soft place to fall when she realizes that those plans won't work and she has to figure out what career she will pursue first in life.

You can only guide her but ultimately you can only get the horse to the water. your conscience is clear.