I just realized that you posted before. Relationship is over. Is she pregnant again or you are talking about what happened before? I recommend seeing a therapist to work on letting it go. I’d start working on how to have better success in future relationships. I don’t see how it’s helpful for you to keep looking into what she did wrong and analyzing her. It’s over and placing blame on her is not going to change anything. Going by your previous posts most women wouldn’t go on with the relationship in your situation (not just because of pregnancy situation). You better off moving on with a help of a therapist.