"She is not honest with the child."
Translation:Cô ấy không trung thực với đứa trẻ.
I ran this sentence by my friend here in vietnam. Native speaker and he confirmed what I thought, that this is not something a vietnamese person would say. That this sounds like an english speaker trying to say an english phrase in vietnamese. He said that this would probably be understood as "she is not honest when the child is with her"