[1] In June 1942, Denner's Jewish neighbour Edith Hahn Beer was ordered to report to the Gestapo.
[2] Knowing that Hahn was likely to be deported to a concentration camp, Denner and some friends sheltered her in different hiding places.
[2] As time progressed, however, the group found it increasingly difficult to provide food for Hahn, and a plan was devised for helping her escape from Vienna: in July 1942, Denner gave her own identity papers and food ration cards to Hahn, later reporting the documents lost to police.
[2] Hahn travelled to Germany under the name Christa Denner, eventually married a German, and managed to survive under her assumed identity until after the war ended.
[2] Beran (née Denner) was recognized as one of the "Righteous Among The Nations" in 1985, and her name was added to a wall of honour in commemoration of her deeds.