Trying to trace relatives of Isobella Dollan, maiden name Isobella Craig Van Der Valk?

Question

Born in Scotland 20/09/1915

Died Newcastle upon Tyne 19/01/1979

Answer 1

Places and dates at least approximate would be good....

Answer 2

Research sources like old census records, the Social Security death index, and immigration records like from Ellis Island.  That is assuming this person lived in the United States.