yes it is some kind of mentoring/foster parent relationship

"Guidance" is the term I have seen and used in this instance, but "fostering" would work and describes it better.

Ref. Termium:
Domaine(s)
  – Property Law (Civil Law)
Domaine(s)
  – Droit des biens et de la propriété (droit
civil)

tutorship Source CORRECT,
QUÉBEC

tutelle Source CORRECT, FÉM



DEF – System of protection of an
unemancipated minor or a person
of full age either partially or
temporarily incapable of caring for
himself or herself or administering
his or her property. Source

DEF – Régime légal de protection
du mineur non émancipé ou du
majeur inapte, de manière partielle
ou temporaire, à prendre soin de
lui-même ou à administrer ses
biens. Source

Seems an excellent word given the context.

This is definitely what it is called.

Now if you don't mind sending a paragraph for confiage, you might get the right answer. It all depends on where, what conditions....
Are you talking about entrusting children into the care of another family in an African country? Or an orphanage or what exactly.
We can hardly read the text so at least copy and paste a paragraph unless you want to end up with just anything. Thank you.