Book’s heroine enthralling one in high position (5)
I believe the answer is:
eyrie
'high position' is the definition.
'eyrie' can be an answer for 'position' (I have seen 'elevated position' mean 'eyrie' so perhaps 'position' could also mean 'eyrie'). I am not sure about the 'high' bit.
'book's heroine enthralling one' is the wordplay.
'book's heroine' becomes 'eyre' (Jane Eyre by Charlotte Bronte).
'enthralling' is an insertion indicator.
'one' becomes 'i' (Roman numeral).
'eyre' placed around 'i' is 'EYRIE'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for eyrie that I've seen before include "retreat for hunter" , "Inaccessible spot" , "Inaccessible place" , "home hard to reach" , "Nest of 19 Across" .)