Rope in young woman, obliging initially (5)
I believe the answer is:
lasso
'rope in' is the definition.
(I've seen this before)
'young woman obliging initially' is the wordplay.
'young woman' becomes 'lass' (lass is a kind of young woman**).
'initially' indicates taking the first letters.
The first letter of 'obliging' is 'o'.
'lass'+'o'='LASSO'
(Other definitions for lasso that I've seen before include "A cowboy's looped lariat" , "Somehow catch" , "Belgian composer" , "Cow catcher" , "something to catch beast liable to run off" .)