I think a more interested aspect is that Thereisa is one of the rare people who have seen Griffith in his Femto form. And now the creepy raven man who dragged her father to hell has now returned as a messiah figure. It's a shame if she were not intergral in exposing him, especially since she would have inhereted the Counts territory, it gives her a plausible reason to return, other than say Jill popling out of nowhere, as awesome as that would be too.