Gender: girl
School:
School #4A
Using the 'fuzzy' label in the search tool, I was able to connect Miriam Szajnbajn to a Mirjam Szajnbajn, born in 1932--the right age to have attended school #4A.
According to the Secondary Source list, there were daily deportations to Chelmno during March 1942, the date during which Mirjam was deported.
Chana (b. 1905), fits the time frame to be Mirjam's mother (her occupation was even 'housewife'). In addition, they lived at the same address and were deported on the same date.