It was my pleasure to pay back for help I've received along the way. I'd love to know how things work out for you and your niece in your search, and I'd especially like to know if you find any connection to the Karstetter family that lived in Hood River, OR. My email address is firstname.lastname@example.org
BTW, the state of Washington has been putting a lot of records online at http://www.digitalarchives.wa.gov/default.aspx
, so that might be another place to search.