OK folks...here's some official information about the "Daria" writing team and fanfic.
Nobody on the writing team reads "Daria" fanfic. Simple as that. So none of these speculations about whether one episode or another is influenced by fanfic are correct.
If an episode seems like or plays out like a given fanfic, just chalk it up to "great minds think in the same gutter" and leave it at that.
I know I once wrote that #403 *seemed* like a Peter Guerin fanfic. Just so there is no misunderstanding, I did NOT mean that I thought it was copied from a Peter Guerin fanfic, just that it played out in a way which reminded me of a few of Peter's fanfics.
Hope this clears things up, --.\\<-H--