Novel about second wife being turned queen by dictating Boris? (7)
I believe the answer is:
rebecca
'novel about second wife' is the definition.
(Daphne du Maurier novel)
'turned queen by dictating boris?' is the wordplay.
'turned' shows that the letters should be reversed in order.
'queen' becomes 'ER' (abbreviation for Elizabeth Regina).
'by' is a charade indicator (letters next to each other).
'dictating' shows a homophone (sound like) (how it might sound from someone dictating).
'boris?' becomes 'Becker' (Boris Becker).
'becker' sounds like 'becca'.
'er' in reverse letter order is 're'.
're'+'becca'='REBECCA'
'being' acts as a link.
(Other definitions for rebecca that I've seen before include "Daphne du Maurier book; girl's name" , "she loved Ivanhoe" , "Mrs de Winter (novel by D. Du Maurier)" , "1938 novel, starting: 'Last night I dreamt I went to Manderley again'" , "Du Maurier heroine at Manderley" .)