Getting better drinks, Charlie enters sister's home (12)
I believe the answer is:
convalescent
'getting better' is the definition.
(I've seen this before)
'drinks charlie enters sister's home' is the wordplay.
'drinks' becomes 'ales' (ale is a kind of drink).
'charlie' becomes 'C' (phonetic alphabet).
'enters' means one lot of letters goes inside another.
'sister's home' becomes 'convent' (I can't explain this - if you can you should believe this answer much more).
'ales'+'c'='alesc'
'alesc' placed within 'convent' is 'CONVALESCENT'.
Can you help me to learn more?
(Other definitions for convalescent that I've seen before include "One who's recovering" , "One recovering from medical treatment" , "Person picking up" , "getting back to normal" , "Novel accents (anag) -- gradually recovering health" .)