First lady accepts approval for call-up (5)
I believe the answer is:
evoke
'call-up' is the definition.
(I've seen this before)
'first lady accepts approval' is the wordplay.
'first lady' becomes 'eve' (first woman in the Bible).
'accepts' means one lot of letters goes inside another.
'approval' becomes 'ok' (OK is an example).
'eve' going around 'ok' is 'EVOKE'.
'for' is the link.
(Other definitions for evoke that I've seen before include "Awake memories" , "Call to mind (memories)" , "Recall" , "call-up" , "Conjure up" .)