>>282218610
She does get featured a lot everywhere. As for actual story content though, I'm pretty sure she only appears again so far in Karen Ogre. She could appear at any moment Shinobu powers up if Nisio wanted though, just slightly less power than the 18 form she is turned into sometimes.

>>282192878
The site where Araragi gets vamped? (Official art btw made before the rerelease)