Yeah... I'm also afraid she won't. After all, if she did, Tieria would probably finally snap for good and place a bullet into Setsuna's skull. And that would be bad. The overly unbalanced power distribution is the only thing I don't like in this series and so far Setsuna has been the only one trying to right that wrong with his idiocy. So, it would be bad if he was gone, because the CB would be even more powerful without him.