Can one forgive what’s written by Her Majesty? (8)
I believe the answer is:
pardoner
'can one forgive' is the definition.
(person who pardons or forgives)
'what's written by her majesty?' is the wordplay.
'what' becomes 'pardon' (I've seen this before).
'written by' is a charade indicator (letters next to each other).
'her majesty?' becomes 'er' (Elizabeth Regina).
'pardon'+'er'='PARDONER'
(Other definitions for pardoner that I've seen before include "indulgent pilgrim?" , "Indulgent old character" , "Seller of papal indulgences; The --'s Tale (Chaucer)" , "who goes further than commuter?" , "Pilgrim and storyteller" .)