My mother was adopted from Germany in 1956. Her mother's name was Anna Therese Aicher. My mom's adoptive parents were later contacted by the adoption agency to see if they would like to adopt my mother's sibling, around 1957-58. I am hoping to find the name of this sibling. My mother's father's name was Karl Nahm, but it is uncertain whether this is the father of the sibling as well. I appreciate any help.