Morag’s crying a lot about Queen’s congratulatory message? (9,4)
I believe the answer is:
greetings card
'congratulatory message?' is the definition.
'morag's crying a lot about queen's' is the wordplay.
'morag's crying' becomes 'greeting' (Scottish term for crying- Morag is a Scottish name).
'a lot' becomes 'scad' (scads of something can mean large amounts of it).
'about' means one lot of letters goes inside another.
'queen' becomes 'r' (r is abbreviation regina. e.g. in ER ).
'scad' placed around 'r' is 'scard'.
'greeting'+'scard'='GREETINGS CARD'
(Other definitions for greetings card that I've seen before include "message of good wishes" , "Means of salutation" , "It's used for wishing well" , "Valentine, for instance" , "way to convey birthday wishes?" .)