Daughters tucking into beer becoming confused (5)
I believe the answer is:
addle
'confused' is the definition.
(I've seen this before)
'daughters tucking into beer' is the wordplay.
'daughters' becomes 'dd' (a genealogical abbreviation for daughter repeated).
'tucking into' means one lot of letters goes inside another.
'beer' becomes 'ale' (type of beer).
'dd' placed within 'ale' is 'ADDLE'.
'becoming' is the link.
(Other definitions for addle that I've seen before include "Muddle or confuse" , "Get rotten" , "Get confused" , "Go rotten" , "Confuse; become rotten" .)