I have a Johana Nemitz b 1863 in germany. She came to the US in 1873 with her parents. They lived in Detroit for many genorations. If this is the correct Johana I have info on her parents and sibblings. My Gr-Gr Grandfather was her brother. I don't have any info on her except born about 1863 and the passenger info.
If you think this is her I can share info with you.