If she can bust out one article in 5 minutes, even with breaks of a few minutes in between to stretch or just clear her head, the writer can do 15 of them in an hour. And that's assuming kreci is her only client. I can see her making over US$100/day quite easily, and depending on where the writer is situated (and it seems that she is not a native English speaker/writer based just from her word usage alone), making between 25-30k year could possibly be no small potatoes.
FYI, I just wrote the preceding in 5 minutes and it's 118 words.