It’s going to be hard to find a field where you can reliably start at 50k/yr immediately after completing online classes, math or no math. Currently there is a glut of recent college graduates, and for better or worse most employers will prefer to hire someone who attended brick-and-mortar classes, all else being equal.
That said, most employers will place a premium on real-world experience, so I would suggest looking for a field in which she could carry over many of the skills she’s learned in her current career.
Or… Commercial fishing. Get on a salmon boat in the Gulf of Alaska in the summer, by the end of the season she’ll have the contacts to get on a cod or pollock boat in the fall/winter. Salmon fishing is hard work, but trawling for cod or pollock is straight up easy.