I have searched the probate register for Florence, and her husband Henry who died 1982, and nothing is showing there, I think you may have to buy a death certificate. Her place of death or the address of the informant may be helpful, but many villages in Hereford were still doing burials in the churchyard then.
A search of the Hereford times for that period may find a death notice, but without a date would be a tedious search.
Mike