Remember, when searching, that it's Newcastle-under-Lyme in Staffordshire.
FindMyPast 1939 search is throwing up three Patricia Owens in N-u-L, but keep in mind that if your mother was born in the 1920s-30s then her entry could well be blocked to you. You are better searching for your gran, but you've not given us her name and age as at 1939.