The field of Mental Health, a field which Sandra Glenney depends on heavily, does not carry the level of respectability as other medical professions. The attached article describes the concerns of the field of psychiatry as a whole. So much that the number of students entering the field was decreasing.  As you can you from a snippet of the article, the validity of the field is in question.

Some psychiatrists conclude that the decade-long plunge in interest that led to the current situation reflects a disillusionment on the part of medical students over the scientific validity and practical effectiveness of the discipline. They also point to student dissatisfaction with a prospective income that has become relatively low in comparison to that of other physicians.