She LOVES writing in her journal.
Aha.
There, Ms. Ed says she's a nurse, which could be anything from a CNA to an RN.
But in her comments at campfires on Skins's island, Ms. Ed is always very careful to gently hint that she's an RN, without actually saying "RN."
Sort of like the way the Bostonian Drunkard wrote his autobiography for wikipedia, subtley suggesting he has a law degree, but not outright lying about it; a case of just wanting the reader to think he is.
Maybe she went to some community college at night, studying to become a CNA, and worked her way through as a keyboardist somewhere.
Remember, before Ms. Ed was fired, she alleged she made $24,000 a year.
I dunno; would $24,000 a year be in the range CNAs are paid?
Again, an RN is a pretty expensive commodity for a hospital or clinic; they aren't just thrown away like CNAs and keyboardists. They have to do something pretty serious to lose their job.
Ms. Ed doesn't appear to be into illicit drugs, so unlike the defrocked warped primitive, it's unlikely Ms. Ed broke into any narcotics cabinet. If Ms. Ed is in fact an RN, it had to be for some really serious professional misconduct.
Maybe Ms. Ed smothered to death a couple of infants in the nursery, seeing as how she hates infants so much. Or something like that.
I'm leaning more and more towards this CNA or keyboardist theory, and that the unappellated eohippus was fired simply because she's a mean bitter nasty vengeful spiteful bitch who couldn't get along with anybody.