Buy her a used full sized Mercury, a brown one that her friends will all not envy and that will have significant mass to provide her a reasonable degree of protection in case the bad happens. A big Buick would be the functional equivalent. Don't listen to her "But Dad, it gets bad mileage" argument. After all is said and done, Father Knows Best.
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It's all downhill from here. Except the parts that are uphill.