Haha, Tass, you're wrong about the last time we saw Hinata. It was on the episode where Naruto, the 2 Sannins, and Shizune return to Konoha. Yeah, it's brief (Hinata walks with her team in the forest), but since I like to bug people on technicalities, I thought I would point this out, hehe.
As for the next time we see her, I have no idea, but she should show up sooner or later.