I will always view those two lines from Bane to be about his views on the innocence of children. If not, then the "lovely, lovely voice" statement as well the "For the sake of your children, Dr. Pavel" lines aren't even necessary and make too much sense because of how Bane cared for a young Talia to not connect the dots. You don't, then marvelous, but I certainly do. I've thought that way since the first time I saw TDKR. Leaves along with Bane? Like, together? Because that's not fact. We know nothing of when Talia leaves the League. It could be right after Bane is ex-communicated, or it could have been days/weeks/months/et cetera. Bane doesn't come along with her. Bane is as much of the plan as Talia is. Talia hated her father to a point and seemingly, so did Bane, but they both were saved in a way by Ra's al Ghul. This was them still honoring the man. And during my discussions with Shikamaru, those men may not have even been LoS and instead Bane's men/mercenaries. Bane had the army, and Talia needed an army = Bane didn't just "come along"(if you go by that theory, and it's quite interesting).