Heroine Jane securing current high-rise retreat (5)
I believe the answer is:
eyrie
'high-rise retreat' is the definition.
(term for an eagle's nest)
'heroine jane securing current' is the wordplay.
'heroine jane' becomes 'eyre' (heroine of Charlotte Bronte's Jane Eyre).
'securing' means one lot of letters goes inside another.
'current' becomes 'i' (symbol for electric current).
'eyre' going around 'i' is 'EYRIE'.
(Other definitions for eyrie that I've seen before include "Nest of 19 Across" , "elevated stronghold" , "Bird's nest" , "Inaccessible spot" , "point of observation" .)