Mary Ann Robinson b.1818 Melton Mowbray

I am trying again to see if I can spot her, I have her in the 1841 and 1851 census but I cannot find her afterwards. this is her in 1851

1851:http://ift.tt/1X0BOv5

Source Citation
Class: HO107; Piece: 2091; Folio: 304; Page: 5; GSU roll: 87719

I have checked her daughters in 1861 onwards and she doesn't appear with them at all.

I have found these two marriages but I am having trouble locating them in the census. Could anyone help please, thank you.

Marriages Sep 1852
Austin Edward Melton Mowbray 7a 393
Black Elizabeth Melton Mowbray 7a 393
COOKE John Melton Mowbray 7a 393
Robinson Mary Ann Melton Mowbray 7a 393

-------------------------------------

Marriages Mar 1853
HINMAN Edward Melton. 7a 348
HOPKINS Sarah Melton 7a 348
MITCHELL John Melton 7a 348
ROBINSON Mary Anne Melton 7a 348

Mary Ann Robinson b.1818 Melton Mowbray