Quote Originally Posted by 6Zabuza9
dammit i swear. every captain that unleashes thier bankai will say "damn, I really didn't want to use this today" or something like that

The way I read it was that she didn't want to use that Bankai. Byakuya has shown that his Bankai has multiple levels and I'm thinking that Soi-Fon's has multiple forms. Otherwise, it would be the biggest disconnect in the series so far between the from/function of the Shikkai and the Bankai.
I think that captain level characters have multiple facets to their bankai, that's why Renji is still such a oke even though he has bankai