The only match for H. Cwajghaft was Hinda Liba Cwajghaft born 27/04/1934 and she lived at Alexhof 14 flat 31 and Zgierska 13. She would have been the right age to attend School #17A.
I found Mordka Mendel born 14/02/1899, Marjen Dwojra/Mariem Dwojra born 14/01/1902, and Rachela born 0304/1927 all living at the same address as Hinda. I also found on Yad Vashem a page of testimony for a Nuncia Hinda Luba Cwajghaft submitted by her sister Rakhel Bekher. I'm pretty certain this is Hinda due to the similar names and they both share the same birthdate. Also it states her father and mother were Mendel and Miriam Dvora. Should I enter the information I've found on Yad Vashem here?