In reply to abr1966:
same issue in our house, as my missus is sub 5' after much looking around the best solution by far has been to buy an automatic, then the reach to the clutch (which is normally the issue) stops being a problem.
Don't think our choices will help much for a new driver, but we've found cmax, 3-series, merriva and older fiesta's and new astra were all good. new Octavias just about ok.
The other problem, almost more important is that if you get her to a position where she can reach the pedals she may be so close that the airbag is now very close to the face. Having seen our airbag deployed recently in a serious crash I'd be very concerned about that on some cars (especially the smaller ones) we've owned before. This seems less of an issue on more upright mpv style cars.