I'm not sure whether you'll be able to order her death certificate-you usually have to be a direct descendant-son, daughter etc... We have a 50 year in Oregon-they have to have passed away 50 years before the public can have access.
But, here is someone who can look up the obituary for you:
Douglas Roseburg Nellie K - Email:
put 'obit request Douglas County' in the subject line of your email. Be sure to give her the exact date of death.
Here's one for Tony:
YamhillBob R - Email
put'obit request Yamhill county' in this one.
Let me know if you have any problems with these-I will get you another referral.