Since Bulah/Buelah doesn't appear in the 1930 Census, she might have married in Coos Co. First I'd ascertain her surname. You can look up her birth information at oregon State Archives, http://genealogy.state.or.us/http://genealogy.state.or.us/.
You can also use that same web site and look for her marriage record in Coos County.
Oregon State Archives, arcweb.sos.state.or.us/pages/records/local/county/coos/inv/marr.html also lists where early marriage records are held. Successful Searching!