Girl sitting in home, an Asian (6)
I believe the answer is:
indian
'asian' is the definition.
(Indian is an example)
'girl sitting in home an' is the wordplay.
'girl' becomes 'di'.
'sitting in' indicates putting letters inside.
'home' becomes 'in' ('he's home' can mean 'he's in').
'in'+'an'='inan'
'di' put within 'inan' is 'INDIAN'.
(Other definitions for indian that I've seen before include "This summer may happen in late autumn" , "Native American or denizen of New Delhi, say" , "IDA inn provided for this notionality" , "Eg, native of Mumbai" , "One from the sub-continent" .)