Long term planning, father/daughter first car build
Electronic ignition (so the points don't go out and strand her at night - or at least an extra set of points, tools, and feeler gauge in the glove box).
Fuel injection, too
With my girls, I want the car to always start. Especially at night.
BTW, they get a LOT more looks in an old car. I'd get her a 10 year old Buick so all the boys think it's a senior citizen driving :-)