Daughter first gets a book reserved (7)
I believe the answer is:
Here is my best explanation:
'reserved' is the definition.
('distant' can be similar in meaning to 'reserved')
'daughter first gets a book' is the subsidiary indication.
'daughter' becomes 'd'.
'first' becomes 'ist' (**).
'gets' means one lot of letters go next to another.
'book' becomes 'nt' (I've seen this in other clues).
(Other definitions for distant that I've seen before include "Absent - coming from a far-away place", "Faraway", "aloof", "overseas?", "Cool", "Far away", "Unfriendly; far off", "cool", "Remote in time or place" and "Aloof".)