Possible Samuel is the same person 1910 NV State Hosp for Mental Disease.It's also possible Ida remarried, as she was still fairly young, altho I didn't find an Ida 1920 Elko that fit.Have you checked Elko for marriage records? It doesn't look like she had ch...why is she important to your search?
1910 Starr Valley, Elko NV NICELY, Ida M 38 OR OH IN m 18y; mgr general store sis KINGSBURY, Mary 42? OR OH IN; clerk gen store niece PETRE?, Hazel 17 OR OH OR; clerk"" niece COOLIDGE, Viola 10 OR OR CO
Do you know the maiden name of Ida and Mary?I ask because Hazel may have been enumerated 2x.The other time with parents Melvin and Jane YORK PETRE.Hazel may have been visiting Ida for awhile.You never know where you'll find your answers.
Ida was quite young when she was appt postmaster Elko Co 1899.