We invited my grandmother to New Year's day dinner at our house and she did come. We had reminded her to pack an overnight bag and stay the night. She has cataracts in both eyes and has a restricted drivers license. Which means she can't drive at night. Did she pack an overnight bag and spend the night? Nope, she bolted as soon as she could and drove home. We had reminded her 3 times that she cannot drive at night and her license states that. She responded with, "I can drive at night, I know how." We asked if she was prepared to lose her license and either hurt or kill someone because she can't see at night. She said that was none of her concern. What should we have done? What can we do in the future? Both grandmothers houses are not big enough to accommodate all the family for holidays.