Helka, I think that Sauron sometimes sent prisoners or orcs to her just for amusement and to keep her satisfied. Because he couldn't get a better guard it seems. I guess that the orcs' vigilance would lessen with time. But Shelob would always be vigilant because she would always be hungry.
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...Nichts ist gelber als Gelb selber...
...The opposite of courage in our society is not cowardice, but conformity...
...Everything is possible, except to ski through a revolving door...
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