Regarding:
For example, the fact that Mary breastfed Jesus may be an important point
to make to a Roman Catholic mother, where as it couldn't make a bit of
difference for a Buddhist mother from SE Asia.

I have to speak up here.  I follow a  Buddhist practice and Buddhist are as
spirtitual in their everyday pursuits as others following other spiritual
practices.  I will look in my resources for a thoughful contribution on
this subject.
Thank You
Christine Palmer, Mill Valley CA