La familia de Roza se mudó a Varsovia en 1934. Roza había recién empezado la universidad cuando Alemania invadió a Polonia en 1939. En 1940, los alemanes cerraron el ghetto de Varsovia, donde sus padres fueron fusilados durante una redada. Roza se escapó y se escondió. Del lugar donde estaba escondida vió el incendio del ghetto durante el levantamiento de 1943. Tenia documentos falsos diciendo que era una polaca católica (Maria Kowalczyk), y fue deportada en un tren de ganado a Alemania en junio de 1943. Trabajó en una granja hasta su liberación en 1945.
Before the ghetto was set afire it started to become real bad. People were murdered. People were just taken out for no reason at all and just killed, especially children were just thrown against the wall...just killed. Well, at one point they rounded us up all and they had lines..."you stay here, you stay here, you stay there." At that time we were already...the people started to get separated from their families. If somebody looked well to them enough to be transported to work--which I thought was work--was in one line. People that were sickly looking or meekly looking, they went another line. Elderly parents were in another line. The people that looked too sick to them, they just took care of them right away. Like my parents were, at that time, really very bad looking, and they just shot them right then and there. And not only my parents but a lot of them. I was in the line and I tried to run out to help but I was pushed back. You couldn't do anything. My sisters were younger than I. They took them to...to a younger line. I was in the older line. However, somehow I got out of that line and I, I tried to hide. I got out of that line and I was able to, to get to a hiding place which I hide...I hid. That's how I got out.
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