Anxiety induced nausea and vomiting can be difficult to cope with for parents as well as their children. Guidance Counselors although may be efficient in assisting with resolution of academic related situations offer little assistance regarding situations outside of their realm. I would suggest some relaxation techniques, to assist with her anxiety. You may want to discuss with her physician about a therapist to assist her in this endeavor. I would however, advise you that if medications are suggested for anxiety relief that you be wary, as I would not suggest this approach as an answer. Relaxation techniques, tea preparations, ginger ale, etc., to help resolve nausea, in my opinion, are the safest way to treat adolescents.