I would propose, she died 1 Jun 1916 (findagrave), Monumenta Cemetery, Lynden--Klaas (Ekjansen) 12:14, 19 July 2012 (EDT)
I agree and have changed the date and source text. No WA State death record for her. Don't know who 2d wife (Mrs. C. who died in 1928) of Cornelius was as there is no WA marriage record for him. --Susan Irish 12:45, 19 July 2012 (EDT)