Which types of jobs are most in demand, that could be learned the quickest by a beginner? She's good at math. Should she start studying machine learning?
Or is Javascript/ReactJS frontend a safer bet? Backend? iOS SwiftUI?
A normal person obviously can't learn in a reasonable time the broad field of software engineering like the ins and outs of computer networks, TLS handshake, cpu out of order execution, avoiding branching, et cetera - but what is a vertical that could be learned in a reasonable time by a beginner that would be a good bet in terms of job prospects?
Your friend can expect to spend several years of deliberate practice learning to program. There’s no shortcut, no best language or framework to learn. The fundamentals are the same for all of them.
Going for a pmp scrum master might be an easy transition.
See what sf bootcamps are offering because they understand the market
Next/React used to be the most popular bootcamp stack
For long career that intersects a love of programming learn whatever makes the most sense to start and keep learning new concepts.
There are the recruiters, whole offices full of these busy mellinials pecking at anything that looks like a worm.
These will put you in front of their churn and you sell it, kid.
Are you good enough? I said sell it!