Possibly she used it as an excuse, but to be fair I think it was a valid reason, if you're not sure you're feeling it and think the guy you're with prefers your mate, then it's likely better you've enough self respect to walk away.
If Chris had been right it might have been different, but ultimately I think he should have been a gent and picked two other people. It's not like they win anything for getting it right. And the fact he was wrong made it look so much worse and revealed it as his thinking not the public's