I think Ai-Chan is more of a 'reaction type' then speaking out of her own self, its also noticable in the 'Love Hello' second audio track, when Yossie is saying something she reacts with a few sentences but then quiets down again. Aside from the fact she is a fast talker (remember some of the CM games?).
To make it 'solo' she will need to talk more because you can't sing and dance continuesly for a whole show, to tiering.