Treated, the daughter does make it (5)
I believe the answer is:
dosed
'treated' is the definition.
(dosing is a kind of treating)
'daughter does make it' is the wordplay.
'daughter' becomes 'd' (genealogical abbreviation).
'make it' is an anagram indicator (I've seen this in other clues).
'does' anagrammed gives 'osed'.
'd'+'osed'='DOSED'
'the' is the link.
(Other definitions for dosed that I've seen before include "Treated with medicine" , "Given shot" , "Given medicine" , "Medicated" , "Administered a drug to" .)