For Dwora Gelb I found a girl named Dwojra Gelb living at Holz 16 flat 6 and she was born 14 July 1932. With the similar names and being born between the years 1929 and 1934 she seems like the best match.
There was a number of people living at Holz 16 flat 6. The names were Fajga FLUM GELB born 1896 and died 19/7/44 (had Lowenstadt as an address) Prywa Gelb born 21 Feb 1901, Lajb Gelb born 29 Dec 1900 and died 29/3/42, Jakob/Jakub Gelb born 18 June 1926, Hinda Guta Gelb born 1865 (she lived at a number of different addresses as well as Holz 16 and she died on 27/7/42) and lasty Josef Gelb born 23 Mar 1867.
I went onto Yad Vashem and found a Page of Testimony for Dvora Gelb born 1932 and her parents were Leon and Priva Gelb. The Testimony was submitted by her brother Jack Gelb (possibly Jakub/Jakob) and that she perished in September of 1944 in Auschwitz. The testimonies for Leon state his parents were Joseph and Hinda Gelb. I believe that the testimony is for the same Dwojra Gelb I'm researching and I'm not sure if I should enter in the testimony information here or not.