A member of the family in this state (2,2)
I believe the answer is:
as is
'in this state' is the definition.
(in the current state)
'a member of the family' is the wordplay.
'member of the family' becomes 'sis' (short for sister).
'a'+'sis'='AS IS'
(Other definitions for as is that I've seen before include "With no changes" , "In existing state" , "without change" , "In the current circumstances" , "in the present circumstances" .)