Let her live with dents for a while…it may reinforce her to pay more attention and become a better driver…make her show she can be responsible enough for a period of time that it’s worth it to fix or help her get another car. You would hate to fix or replace the car just to see her have another accident right away. Reinforce to her it was an accident and keep her confidence up…nothing worse than someone afraid to be behind the wheel.
Young drivers are inexperienced and do have a higher likelihood of an accident…plenty of experienced drivers that get complacent and have accidents too. Most important is no serious injuries of course.
With an older car it’s a tough call depending on the cost/trouble to repair it. My concern with kids driving is making sure the car is reliable….it’s a pain to get that call the car has broke down.