Very interesting googling on "non-linguistic word" and "non-linguistic words". I hadn't realized that your post consisted of two unattributed quotations from two different linguists: Robert A. Papen, I've never run across before. Suzette Haden Elgin is also a science fiction author. She wrote Native Tongues.

http://www.linguistlist.org/~ask-ling/archive-most-recent/msg07678.html

http://www.linguistlist.org/~ask-ling/archive-most-recent/msg07670.html

I hadn't notice the scare quotes around Professor Papen's use of the term non-linguistic words in his answer on the Ask-a-Linguist part of the Linguist List. I've never run across the term before, but here are two linguists using it. The other uses seem to refer to nonsense syllables being generated in psychological tests having to do with memorization and recognition of "non-word" words. Anyway, it's not a term that I'd use, as its meaning seems to be a one-off coined by one (or two) linguists.

Another interesting bit is the questioning woman's email address. It's two-letter, top-level domain, country code indicates origin in Micronesia (i.e., fm), but the site is a Polish language free email service. Protection against spam or just plain anonymity. She does sign herself "Rachel Green". Hmm, rather than tsk-tsk.