Check the 1979, 1980 and 1984, 1985 Dayton city directories, looking for ANY variation of Engles. Don't overlook those names beginning with "I". Her given name should be easy to find. You need to check succeeding years because data in the 1979 and 1985 directories may have been accquired in the previous year.
Once you find her name, write down the name of her husband (if any) and the names of other people at the same address, which may be her children. If no other names are listed then you may have to check earlier directories.
Then look for her obit. If her brothers died ca 1985 then she most likely is deceased by now but her children may be living.