Lady setter in trim condition picked up (6)
I believe the answer is:
eileen
'lady' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
(Other definitions for eileen that I've seen before include "Female name (including three letters E)" , "Girl" , "Female name (not beginning with A)" , "woman" , "F. name; nee Eli (anag.)" .)