Mother got confused, true, and daughter grew up (7)
I believe the answer is:
matured
'grew up' is the definition.
(to grow up is to mature)
'mother got confused true and daughter' is the wordplay.
'mother' becomes 'ma' (ma can mean mother).
'got' means one lot of letters go next to another.
'confused' is an anagram indicator.
'and' is a charade indicator (letters next to each other).
'daughter' becomes 'd' (genealogical abbreviation).
'true' with letters rearranged gives 'ture'.
'ma'+'ture'+'d'='MATURED'
(Other definitions for matured that I've seen before include "Developed; grew up" , "Developed fully" , "Became fully ripe" , "Mellowed" , "Ripened" .)