I don't "know" what the OP originally asked but my sense is that she wants to rush/join only a Jewish house, or a house that is predominately Jewish, whatever its' name. So, as I said to a poster that despite a Jewish last name isn't Jewish and was in horror that she would be confused as being a Jew my advice stands: Wear a cross or a Star of David. You get your message across in a subtle polite way.