The family was catholic so she is probably in St. Joseph Cemetery.
If you are not able to find her through the Historical Soc., you can always contact the archives for a copy of her death certificate: Oregon State Archives 800 Summer St NE Salem, OR 97310 503-373-0701 ext. 1 Fax: 503-378-4118 firstname.lastname@example.org
As for other records, you need to be a little more specific. The family of George lived in Baker county for many years, and that is where he passed away; Manda died in Bend but is buried in Baker; sons moved to Portland, Bend etc...
According to James' obituary he attended school in Baker and graduated from Baker High as did Raymond and others. You will find "records" in Baker county: Smolich, RobertLdate:1951Eidson, Delores ColleenBook 15 Page 240 Smolich, Raymond Douglas date: 1964Round, Linda MaeBook 17Page 372
Cardinal, GeraldThomas1960Smolich,HelenMarie1746 Gutridge, WilliamMichaelno date Smolich, Cynthia Kay72-01118-123
I hope this helps with your search. Good Luck! Laura