Corrected entry: Alice couldn't see future involving half-breeds, such as Renesmee and the werewolves, so she couldn't see how Volturi would be destroyed by the Cullens and their friends, or the scene where Jacob and their grown up daughter stand near the ocean.
Phixius
19th Feb 2013
Correction: She can't see the future for werewolves because she can't see past an unmade choice, and they operate too much by instinct rather than forethought. She can't see much of Renesmee's future because of the werewolf Jacob's involvement in it, not because of Renesmee's status as a half-breed. In both of the instances cited in this mistake, however, a clear choice had already been committed to by everyone involved, so Alice was able to see the possible future outcomes.
Phixius ★