Thanks family members. First girl is withdrawing and charming (6)
I believe the answer is:
taking
'charming' is the definition.
(I've seen this before)
'thanks family members first girl' is the wordplay.
'thanks' becomes 'ta' (UK informal version of 'thank you').
'family members' becomes 'kin' (kin means one's relations).
'first girl' becomes 'g' (1st letter of 'girl').
'ta'+'kin'+'g'='TAKING'
'is withdrawing and' acts as a link.
This may not be right. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for taking that I've seen before include "Removing; stealing" , "Harm, damage" , "Attractive" , "Stealing; charming" , "Charming, removing" .)