If she is this flaky now imagine what she would be like after marrying her!
SteveLW is right on the money! You may, one day, look on this as a blessing.
If you’ve been through DBing once, I wonder how deeply you did it. You should have come out the other side of your first marriage and divorce and DBing journey with a much better sense of self. I couldn’t imagine being with someone who didn’t want to be with me second time around!