The embarrassing (for your wife) phase of being asked about you will pass, it is temporary and within a few weeks or months someone else will be the focus of attention and you will be a footnote.
She will be going thru a period of anxiety over this, so ressure her you love her (assuming you do) and do not be confrontational about the cult, instead be relaxed and happy so she will then learn to be relaxed and happy (happier) about it too.