My late grandfather, Hershel Neuman, a Holocaust survivor, had a sister Hencha Neuman, born circa 1910 in Nizhniye Verecky (Veretsky) in Czechoslovakia (modern Ukraine).
Hencha was married with children before the war and she and (i believe) her husband and children all perished.
I don't know her married name, nor the names of her husband or children. So far as I'm aware, no one has written testimonies for them on Yad Vashem's database.
Anyone have ideas of how to go about trying to find out more with such limited information to start?