She is entertained by the queen somewhere in Surrey (5)
I believe the answer is:
esher
'somewhere in surrey' is the definition.
(I've seen this before)
'she is entertained by the queen' is the wordplay.
'is entertained by' means one lot of letters goes inside another (entertain can mean to host or welcome in).
'the queen' becomes 'ER' (Elizabeth Regina).
'she' going inside 'er' is 'ESHER'.
(Other definitions for esher that I've seen before include "Sandown Park's location" , "Town SW of London" , "Surrey town and racecourse" , "Town near Sandown Park" , "somewhere in Surrey" .)