My greatgrandmother was Martha Bonin,born in 1881 in Preiswitz,Schlesien,Prussia. She had a sister name Marie. Their mother died 1889(?), father had alcohol problems, so Martha and Marie were raised by a grandmother.
Martha immigrated to the United States around 1902. I know about her life after that.
Marie lived in East Berlin, Germany in 1950 and her married name was Kaczmarek.
That is all the information I have. Thank you for any clues.