Pick up her article within (4)
I believe the answer is:
hear
'pick up' is the definition.
(I know that pick up can be written as hear)
'her article within' is the wordplay.
'article' becomes 'a' (the indefinite article in English).
'within' indicates putting letters inside.
'her' placed around 'a' is 'HEAR'.
(Other definitions for hear that I've seen before include "Catch" , "learn" , "Listen to" , "Perceive sound" , "to judge" .)