Was in a game the other day and this situation was up.
Primordial magic casts dementia on Pandora and lets it resolve. Pandora gets pushed along by spammer WP duels on her til shes half way across the board about 14" away from the 1st enemy model.
Pandora wants to use Incite as a 0 action but shes out of range. But dementia states before taking the action make a wp 13 duel. So based on turn events Pandora would declare the incite even tho she would be out of range, but before actually taking the action so it would fail, she would make her WP test, this would then cause her ability Fading memories to push her 4" (before the incite action) now shes within 10" of the model and in range of using incite.
We decided she couldn't do it during that game, but it seems like it would be legit thing she could do.