Okay, if we are speculating, I will offer some.
Something has happened to Diddi but it wasn't serious enough for Lois to have to treat him.
Yes, she is married to the chief, but in name only. He added her as a wife so that she would have his protection.
Maybe what really has her upset is not so much Diddi as the chief just gave her her freedom and has gone so far as to tell her she is now married to the white man since be obviously came ffom the same place.
