I've just had another look at Ann Fox in the 1851 census. Her place of birth still looks like 'Green St' or 'Queen St', but I had a look at a few other pages and none of them have such a specific place of birth - they seem to have the Parish rather than Street names. I know we've been over this already but I still I wonder if it could be something else? Does it look like the name of any known parish?
Also, can anyone read what is written for Ann in the "relationship to head" column. I have an idea what it says but would like others opinions. 
Just got the red warning. Good work Deb. I hope she's there. 
#45. #44....Ann Fox, Lodger, age 49. Charwoman, Queen/Green

Street....no marital status given or indicated.
(living in same building as Mary Eliz Kennington) at 27, Stephen Street, Saint Pancras, London, Marylebone, Tottenham Court.
Daisy...I'm so sorry about your OH

mab