I wanted to let you know I've learned what became of my aunt, Gertrude (Hathaway) Horn De WOLFE (1902 - 1944), mother of Joan (Horn) KLICKO.
At some point prior to Sep 1943, Gertrude remarried Harold DeWolfe (child's school record) (marriage not yet located).
20 Sep 1944, Gertrude died of a heart attack during childbirth. The child did not survive and they are buried together at Oakview Cemetery, Oakland County, Michigan.
Thank you so much for all your assistance.