Her performances on stage in Germany were noted by British newspapers because there was a special guest during her appearance in the play "Die lustige Witwe" in 1939 who became one of her admirer - this was Adolf Hitler.
Miriam Verne and other members of her group were invited to several occasions of Hitler. This originated the British newspaper to create a romance between them. Germany was not in state of war at that date.
After her return to the USA she said to these articles that Hitler treated her like a little child and that the credited romance with Hitler was ridiculous. He did not show more interest to her than to other artists but there were moments when he looked at you that you could recognise he was fanatic.