MILES to GO || before I sleep

So there's only one more week until the very last episode (26) of Inuyasha: The Final Act airs and then it's finally done. Finito. Owaru. OVER.

Having experienced Rumiko Takahashi's so-called endings before, I'm prepared for something out of left-field, but I wonder with all the time she's spent making this story (and whether or not the anime adheres very well to the manga, but I've heard it has), the fact that the anime stopped and started again in a new OAV-type series, and all those movies, etc...could she really cop-out of what the ending just plain calls for at this point? (And I think it's been pretty obvious from the get-go; if anything, Inuyasha at least had an implicit promise established well within the first season.)

( Spoilers for those who may not have seen The Final Act )