|Well, and this is just my theroy I'm not trying to say this is accurate or anything I just kinda like it, Considering that whenever she uses any of her powers she ends it with "I reject" (at least in my translations) I imagine that they all work in more or less the same way. And if Aisen could get Hinamori to stop trusting Hitsugaya whom she grew up with (or something I'm a little off on how exactly that works in Soul Society either which way they spent alot of time together before they became Shinigami) Then he can probably hypontize her into becoming the type of person that could and would use Tsubaki to his full potential.|
Well, regarding Hinamori, Hitsugaya was her childhood friend, but she was also extremely loyal to Aizen, being his vice-captain and all. When he died and saw his body impaled on a building, she was obviously traumatized. When someone that she was extremely close to and believed was infinitely strong (somewhat of a father-daughter relationship) to die, it obviously skewed her reality and she was thus willing to accept anything. She attacked Kira, who she was good friends with, and then Hitsugaya, since she was pretty much ... going crazy, so to speak.