You know, any one of the issues listed by itself (with proper honesty during the interview) would probably have been easy to mitigate. But the combination of these things really blows her credibility.
I found myself believing her story and actually holding some sympathy for her up until I got to the emails she sent her husband. Those emails were the most important factor in this determination (aside from the fact that the emails are what likely kicked off the investigation as a whole).
She unfortunately made their tough situation worse.