Something really doesn't seem "right."
Sandy seems to be from a well-established, affluent, well-known family.
What would make Isabelle Zehnder: a woman with no 4 year college degree; no credentials in psychology, or child therapy; no law degree; no license in Social Work; no credentials even as an Educational Consultant, even think that a family would turn over GUARDIANSHIP of their child to her?
Didn't this girl have parents, grandparents, even Sandy--a concerned, and apparently loving step-mother who could be legally responsible for this child?
Why would family members even consider turning over GUARDIANSHIP of their minor child to someone who was practically a stranger?
And, another question: why would Isabelle Zehnder even ask to take on such a responsibility?