The only person I found for Zosia Perla was Zysa Perle born 10/08/1921 and she lived at Bleigasse 30 flat 7 and Oststrasse 70. She was also deported on 13.3.42 on TR 28. I'm pretty sure Zysa is a good match for Zosia because she fits the age range for School #6.
I found the following people living at Bleigasse 30 flat 7, Ajdka Perle born 10/09/1868 and died 31/12/1940 (possibly Zysa's grandmother) Lajb Perle 21/07/1908 and moved on 15.3.42 (her father) Beima Ryza Perle born 15/07/1903 (mother) Mordcha Perle born 11/03/1930 (brother) and Ruchla born 10/09/1931. I also found Ruchla Perle born 10/09/1868 so I'm confused by this. Was Ruchla Perle born 1931 or 1868? Is she the same as Ajdka Perla. According to the secondary resources Zysa was sent to Chelmno and killed in the gas vans.