Hi, Not sure if you have looked up Myrtie Turner, In the 1905 census in Canisteo, Steuben, NY Myrtie is the grandaughter of William P Delaney and Elizabeth born abt 1884.
The 1892 census has Myrtie in Steuben again with William and Elizabeth Delaney and there son Andrew Delaney.
Looking in the 1880 census in Canisteo Steuben NY again The Delaney family William 47 b Penn Elizabeth 47 b Penn.
Franklin 22 b Penn.
Margaret 20 b Penn
Lizzie )Elizabeth) 16 b NY
John 11 b Penn.
Andrew 7 b Penn.
If the Myrtie Turner is the same person than her mom has to be either Margaret or Lizzie or another daughter who might have died I say that because one of the census has Elizabeth having 6 children with only 3 living.
Hope this helps.