Hello. My research of the Kadow line has found the family of Freiderka. Carl Frederich Wilhelm Cadow [b. 6/26/1825 in Neuendorf, Posen, Preussen] and his wive [ Sophie, b. 1830] and family immigrated to the US on the ship "Oder" on 6/9/1862. The children were Whilhelmine and Hans both born about 1855/56, and Marie born abt 1858, and Frederika listed as 7 months old, giving her birthdate about 11/1861. This information is from "Germans to America". The 1910 census shows that Frederika is living with Charles, most likely her cousin. Franklin and Lillie are the children. Mabel must have been born after 1910.
Let me know if you have additional information regarding any of the Kadow lines.