Please, have her evaluated by a psychiatrist and referred to a therapist for intensive counseling. (Start with a psychiatrist, because they can prescribe meds, which in my opinion are necessary for patients suffering from PTSD.) Hopefully your school can help out with a referral to a psychiatrist that specializes in PTSD in adolescents. The good news is, this is probably fixable, if she’s willing to put in the time and do the work.
