Responses
I don't think that isayama have told us about this, but if you look closely, you can know both of them are mikasa and Jean, and for the child, I just randomly said its mikasa's grand grandchildren cause she had mikasa's scarf (I'm sorry if I make you hope, that's just my thoughts and theory, I'm terribly sorry)
Did jean and mikasa ended up together? WTF. Who's that little girl in the last panel? She looked like young mikasa.