Girl climbing tree with boy finally following (5)
I believe the answer is:
emily
'girl' is the definition.
'with boy finally following' is the wordplay.
'with' means one lot of letters go next to another.
'boy' becomes 'emil' (I've seen this before).
'finally following' becomes 'y' (I am not sure about this - if you are sure you should believe this answer much more).
'emil'+'y' is 'EMILY'.
'climbing tree' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for emily that I've seen before include "Girl's name" , "One of the Bronte sisters" , "Girl" , "- - Bronte, author" , "A Bronte sister" .)