What would be implied by a person or culture (possibly, but not necessarily, one of the Fair Folk) addressing people as "Daughter of Adam" and "Son of Eve"?
I would like to see it done. As others pointed out in much more detail, it plays on the gender-assignments assumed in western lit that Lewis was embroidering on, in a way that implies familiarity with his bias, but foreign or alien to it. I think the connotations of each title need to be worked out separately: one at a time is enough to hit people with, given the strong Narnia-flavored readings (& misreadings) shown by commentators. Given that Lewis' usage seemed to arise quite naturally in its context, it is also a natural & logical next question, that proposes a restoration of some lost archetypal balance.
From:
Speculative ethnography