The Washington Death Certificate Index shows
--George H. Fortine died 17 May 1917 in Oroville, Okanogan County, at the age of 51 years, 11 months and 4 days. The death certificate for parents was identified as reading "Do Not Know". So, whoever provided the information for him (respondent) either was not a member of the family or had little information on him.
--Alice Fortie, died 20 May 1938 at Medical Lake, Spokane Co, WA, at age 30 years 4 months and 36 days (36 days? that is unusual as it is over a month period). Her parents were George Fortie and Flora Vezzoni. (This is based on the names you provided. You may have more information to confirm this George is the same as Fortine. But, this death certificate shows this Flora was a Vezzoni.

Before you PAY any society for research, there are two volunteers in Okanogan County, both do public records research and copying. READ the Guidelines first before contacting: Set for Okanogan County.
http://www.raogk.org/washingt3.htm

Ron Bestrom