Who is Eva Kupas from Children of the Flames: Dr. Josef Mengele and the Untold Story of the Twins of Auschwitz and what is their importance?

Eva Kupas and her twin were sent to Auschwits in 1944. She remembers very little about the war..... her one memory was a trip she took with the other girls in the camp to pick wildflowers. After the war, she relocated to Israel.