— Majesty (3)
'majesty' is the definition.
(thesaurus)
This is the entire clue.
(Other definitions for her that I've seen before include "That lady's" , "She, objectively" , "That lady" , "The female's" , "In the Midlands she" .)
(Other definitions for splendour that I've seen before include "Magnificence, brilliance" , "Spectacle" , "Brilliance or pomp" , "Magnificent appearance" , "Brilliant appearance" .)
(Other definitions for your that I've seen before include "-- Majesty; -- Grace" , "Second person's" , "See 5" , "Thy" , "See 12" .)