About the driving....is the relative (who may know more about when and where she's driving) willing to call law enforcement when she's behind the wheel? That would be the easiest and surest way to get her out of the car. Because once that happens, her license will be taken away and there's no way for her to get it back unless and until she's treated for the condition and is seizure-free and off seizure meds for a year. That's not to say she won't drive but it would certainly curtail her because LE will be watching her. Also, if they stop her and she has kids in the car, THEY will report her to DHS. It's possible that DHS is slow to move on the current case because it was referred to them by a relative (which can be subjective), whereas coming from LE, it's a 3rd party objective report.