This is the death of Sarah’s grandmother, Ann Westwood, née Caldwall:

Quote

In the 11th inst. died, at Leominster, Mrs. Ann Westwood, widow of the late Mr. Joseph Westwood, of Brierly, in this county, aged 88 years. She was deservedly beloved and respected by a numerous acquaintancce.

Hereford Journal, Wednesday 22 May 1833 source

Putting her at ~26 when married.

Further records of Ann’s death:

First name(s)Ann
Last nameWestwood
SexFemale
Burial year1833
Burial date15 May 1833
PlaceLeominster
CountyHerefordshire
CountryEngland
Record setHerefordshire Burials
CategoryBirth, Marriage, Death & Parish Records
SubcategoryParish Burials
Collections fromEngland, Great Britain

source