Friendliness of girl embracing computer studies (5)
I believe the answer is:
amity
'friendliness' is the definition.
(amity is a kind of friendliness)
'girl embracing computer studies' is the wordplay.
'girl' becomes 'amy' (**).
'embracing' indicates putting letters inside.
'computer studies' becomes 'it' (Information Technology).
'amy' enclosing 'it' is 'AMITY'.
'of' acts as a link.
(Other definitions for amity that I've seen before include "understanding" , "Cordial friendship" , "Accord" , "Friendly relations" , "Friendly feeling, fraternity" .)