2) I think, she still believes that he didn't tell her those with bad intentions even though she has not known why he had done so yet. Maybe just when people reach certain age, they begin to like recalling old days and feelings.
As for herself, she just felt a bit too surprised that her long lasting questions could get some answer, especially the answers were some things she never expected and she barely believe them even now. In terms of future, she doesn't think much will happen given their current situation.Moreover, she is definitely not that little girl at that time anymore.
However, she can't help asking herself a question - if there had been a good ending between they two, would her life have been changed totally?
因为那段时间她和他通过网络,联系得多了一些。有回,可能是他又重提了些往事,她就干脆摘了点“猜心”里的东西给他看,直接了当地问了他为什么。他回答的原话是:She is too smart to be his wife. Since he won't marry her, he can't love her。所以,她就有了3)的感慨。