I can't believe that I have same situation as you. the troubles that your maid made are same as mine. Well, in my case, my current one is also the third one. bad things and good things are same as you mentioned. So, I have a little bit strggle before. Now I have conclusion as my one is already "hopeless". I will replace her when the new one coming. I think it is not because she can stand whatever you scold her and has no black face. It is just becasue she dosen't care what you say. She just turns the blind eye and death ear to you. If she has no change, what you scold is just "rubbish" and "waste air". So I changed my mind. If she cannot meed my requirment, no need to stay.