I solved most of her issues education wise and her Muggle career plan is to join one of the British military services and could easily do that at 21 after five years at Hogwarts, even a bit older, recruiters could be told she tool time off to work and educate herself not having much money for school wanting to not enter until a bit older. She took her British exams in key subjects and philosophy and ethics (one test) and had her score well so that covers her admission demands other than being fit (witches seem to be healthy thanks to magical medicine). But her dad and mum don't want her to join the military so are meddling harassing the school some to try to find something else she might like. Oh the drama.
Now I need to find an avatar.