From Dickens's Hard Times, ch. 13:
‘Thou art an Angel. Bless thee, bless thee!’
‘I am, as I have told thee, Stephen, thy poor friend. Angels are not like me. Between them, and a working woman fu’ of faults, there is a deep gulf set. My little sister is among them, but she is changed.’
Is changed here a verb or an adjective?
Change here means death: an antique sense for the word, mentioned in The Century Dictionary. A quote from there:
All the days of my appointed time will I wait, till my change come.