"She came back" should also be an alternative here.
I wrote ´she came back´ and it was accepted.
'Ela voltou' she returned to any place!
'She came back' She returned to here: 'Ela voltou para ca'
'Ela voltou' doesn't specify where she is back!
Please never say: She has came back. It is a shocking mistake in English. Always say: She Came back or She HAS COME back.