La Sauvegarde de l'Enfance was described in the mid-1950s as "an adoption agency serving the French-speaking
Roman Catholics in the Archdiocese of Quebec."
I quoted from page 470 of "Adoption Agencies, Orphanages and Maternity Homes: An Historical Directory," c1981, now out-of-print.
The agency is perhaps included in the Canadian Catholic series of directories titled, "
La Canada Ecclesiastique," published annually since 1887.
A search engine such as Google.com could probably dig up all sorts of interesting entries, including adoptee search and support groups or reunion registries.
Don't forget that the U.S. Immigration and Naturalization
Service would have a file on the adoptee, and I suppose the Privacy Act of 1974 could be invoked if she wanted to obtain a copy of her file.
Good luck from [Mr.] Reg
Niles.
RegNMINiles@cs.com