I think your daughter has the right idea to want to avoid being "drugged into an utter fog"! The first step should always be to check for any physical condition, allergy, hormone imbalance etc. Proper nutrition, exercise and/or supplements handles most of these so-called "mental disorders". You might try agreeing with her distrust of psychiatry as a first step towards regaining her confidence, then she if she would be willing to try any of the above.