First of all, girls need to accept their appearance and learn how to deal with scars. She can use some cosmetics or other methods to cover up the scar and make herself more confident. At the same time, she can also seek medical help, such as skin grafting or other operations to reduce scars.

Secondly, girls need to learn to face their emotions. The car accident has caused great psychological harm to her, and she needs to find effective ways to deal with her emotions. For example, she can participate in psychological counseling, or seek the help of support groups to ease her emotions.

3. Finally, girls need to find their hobbies and actively participate in them. This can make her forget her scars and enjoy the fun of life. She can try some new activities, such as learning new skills or participating in social activities to find her hobbies.