How can knowing common first aid skills prevent infection and facilitate the healing process?

Skills such as applying bandages and antibiotic ointment are important not only at the time of injury but also afterwards during the recovery process. Knowing the proper procedure for cleaning and dressing a wound can help prevent infections during the recovery process, which aids healing. Knowledge of first aid also helps an individual know what actions and behaviors are more and less conducive to recovering from an injury.

tell their parents and make sure she gets from a counselor or therapist. be supportive and be there for her. be a kind and good friend. spend time with her to make her feel like she's not alone. i'm not a professional but i really hope they stays strong.