Hi Geoff
I have found your Hannah in 1930. You said that she lived in Woodhaven in 1931, so I searched for Hannah living in Queens and found her mistranscribed as "Serton". She and her family are living at 133-31 83rd Street.
Head, Hannah Sexton, age 47, owns home value 5,300, has a radio, first married at age 24, born Southern Ireland, parents born Southern Ireland, immigration year 1899, occupation none
Also in the household is, Nellie age 31, Timothy age 19, Daniel age 16, John age 13 plus
Richard Glennon age 27 and Jewly Glennon (Julia?) age 23. Julia is shown as being first married at age 19
IGI has a marriage..
Sexton, Julia December 28 1926, certificate number 1426, Manhattan
Glennon, Richard E "Dec 28'26 1927" 1426, Manhattan (which shows that the marriage was registered in 1927)
Best wishes
Agnes