Gender: girl
When searching for E. Gercyg only one name came up and that was Estera Gercyg born 17 Oct 1925 and living at INSEL 38 flat 54 and BUCHDRUC 138. It says she's a "HAUSFRAU" but I think is probably a mistake since she was only 17 in 1942 and 18 in 1943 when she died on 21/07/1943.
I also found her under ESTERA GERCIJG with the same information except Buschlinie 188 as her address.
I found Estera in the Lodz Ghetto Hospital Death Records. It says she was born in 1925 in Grajewo, Poland. She died on 27 July 1943 in the Lodz Ghetto from "Lungenschwindsucht."
I found living at the same address, Owziej born 15 July 1888 and died 9 Oct 1942 and Juljan born 31 Oct 1936. In the Lodz Ghetto work Cards (via JewishGen) I found Basia Bajla born 1895 living at Inselstr. 38/54. I couldn't find her in the Inhabitants database though.
On Yad Vashem there are Pages of Testimonies for Bajla (Basza Gercyk nee Frank) Owziej (Owsej Gercyk) Estera (Ester Gercyk) and Juljan (Yehuda Gercyk). It says they perished in the Lodz Ghetto and there is also a testimony for Lejzer Gercyk (possibly Estera's brother).