A search of the AZ state website which has birth records online did not list Madeline's birth. However, I don't know how complete this listing is.http://genealogy.az.gov/
California, Death Index, 1940-1997 about Helen Hunter
Name: Helen Hunter
Birth Date: 5 Aug 1874
Birth Place: Illinois
Death Date: 22 Jun 1959
Death Place: Napa
Mother's Maiden Name: Godinson
Father's Surname: Vanbuskirk
Also an Illinois marriage record for John VanBuskirk
VANBUSKIRK, JOHN MOVER, SUSANNAH E 1866-03-11 00E 0139 MC LEAN
Both Bloomington and Normal are in McLean County, Illinois.
Possibly Victoria VanBuskirk's mother died prior to 1880, and then her father remarried, taking the family to Texas.