Negotiating radial categories: Some mothers do have them

Is It Possible To Be Half-Adopted?  Imagining someone giving away semen or an egg couldn’t possibly feel the same as imagining a parent giving a way a baby. Could it?
The friend who asked whether I consider Mrs. Ramirez to be adopted is adopted herself, something she doesn’t associate with rejection but rather with acceptance, being desired by and accepted into a family.
Sometimes it’s the fault of language, the lack of words yet invented to describe our lives, that makes it difficult to know and explain who and what we are.  Are you a mommy? A second mommy? An other mommy? Are you adopted? Are you biologically adopted?  What it all means to Betsy Ramirez will be up to Betsy herself to discover, to find the words for and to one day explain to her moms.

This is a perfect example of the negotiation of category boundaries. Lakoff in Women, fire and dangerous things spends a whole chapter analyzing the radial category of mother and this is an example of the same analysis happening in 'nature'. Not much more to say.