I honestly think it is because she is trying to convince herself that everything is fine even though on the inside she knows it's not.
Either way she will have to face the reality sooner or later and I am betting on sooner.
yes thats why in reality she does not trust him she is not happy but shes using her fake smile you know i find it funny how ss fans used to bash sakura for the fake smile in her confession and now its here again but this time to make ss look anti for real
I personally would find it more reasonable if Sasuke did still have some dark intentions. Because right now he seems ooc to me after all the antagonistic things he did. But if his development is real than I wouldn't mind. I would not make sense to me nor would I consider is Kishimoto's greatest moment in story development but I'd make my peace with it eventually.
@ Dkey: Yeah I could go for that. It could work.
yes i need sasuke to turn back into an avenger that way the fight will be more epic