Daughter studied in fear (5)
I believe the answer is:
dread
'fear' is the definition.
(dread is a kind of fear)
'daughter studied' is the wordplay.
'daughter' becomes 'd' (genealogical abbreviation).
'studied' becomes 'read' (to read a subject is to study it at university).
'd'+'read'='DREAD'
'in' acts as a link.
(Other definitions for dread that I've seen before include "Anticipate fearfully" , "Deep fear" , "Show horror" , "Apprehensive fear" , "Great fear or apprehension" .)