I may really be tuting my own horn here.lol..but again, from everything that I've read..unless I'm mistaken (and if I am for anyone that's actually seen the film..please correct me.lol) I don't think any hints are given about her being Talia in the same way that none were given about Liam being ra's until the moment of truth.
I also haven't seen the film but..
I read something that mentioned it being stated in the film that someone had escaped from the prison before, but the audience is meant to assume it was Bane rather than Talia.









