Thanks for the thought - but if you go back to the "Caillou" Wiki, you'll find that the user in question has already reverted both of your edits. If I become the admin, I intend to do something about that, because such a situation can't continue, but in the meantime, I don't see how I could discuss anything with that user if she makes it a habit of removing anything that anyone posts on her talk page. As for the other users that you mentioned, well, see my comment on my original application. The rules for applying state that there should be "no sustained editing by other users," which they aren't, other than the one already mentioned who refuses to talk with anyone. Some of them are even obviously vandals.
Yeah when I left the message hadn't looked closely at the type of edits being made yet. Her removal of content precludes her from my wanting her in an authority position but if a contributor it's prob good if she has a say still.