I believe Hela Lajzerowicz may be Halina Lajzerowicz. It is not hard to stretch the imagination to see that Hela might well be a diminutive of Halina. Or, perhaps Halina is diminutive of Hela, and she signed her full name on the card. Furthermore, Halina Lajzerowicz, as listed in Lodz-Names: A Record of the 240,000 Inhabitants of the Łódź Ghetto, was born in 1932, putting her birthdate within the parameters of this project.
There is another Halina Lajzerowicz who is also listed in Lodz-Names: A Record of the 240,000 Inhabitants of the Łódź Ghetto. Her birthdate is in 1926, so she, too, is within the parameters of this project.
N.B.: The addresses at Hohens and Julius refer to the Halina born in 1932. The addresses at Muhl and Cegilniana refer to the Halina born in 1926.
Furthermore, it appears that the Halina born in 1926 moved within the ghetto to Holz 8 on 30 DEC 1942.