Hi
Have a look at GENUKI for Broughton Hackett and get a sense of the area. The map shows you its position in relation to other C of E parishes. The section also explains that the major landowners were the Coventry family of Croome Court and the Berkeleys of Spetchley Park. Sometimes Berkeley tenants from outside of Spetchley were buried there. If you go to the card catalogue on Ancestry and key in Worcestershire you will find All Worcestershire, England, Church of England Deaths and Burials 1813-1997, you can browse any parishes you are interested in and from that discover what length of time for each one is covered on Ancestry. In the case of Spetchley the burials only go up to 1866. I had to go into Worcester early this morning and I had the opportunity check Spetchley PRs, Ann is not buried there.
The only other none parish registers suggestion I can make is that she might have been buried at Pershore Cemetery, records are held in the Original Documents Section (ODS) of Explore the Past - the Worcs Archives. The register of graves 1876-1950 is not on microfilm. The reference is Ref b260.32.1 BA 2385/1. Unfortunately, the Archives opened at 1.30pm today and It wasn’t possible for me to stay until then. If the staff are not able to do a free look-up for you and you are prepared to wait I should be going into Worcester, other than on a Wednesday (!) in the next week or so.
Jack