Dear @Jassica,
Unfortunately, I am not aware of any privileged visa policy for people who are born in Germany but don't hold the citizenship or any residence permit (anymore). I am afraid that the person would need to apply for a student visa within the normal procedure. Sorry that I can not share more positive information for the time being.
In any case, please don't hesitate to get back to us with any further questions.
All the best,
Meike