About your maid's 2次不愉快事發生過:
1 - 無問我,自己拿了我的東西,被發現后還要問了兩次才承認(好早初期來的時候)
2 - 被發現在我家SMOKE(后期)
You shared these two incidents meant you really mind/ cannot accept, if I were you, would open discuss these two things with your maid, and tell her you could not accept, could she change/ not do anymore? Tell her you hope to have a happy/ harmony employment relationship with her. If she promises not to do anymore/ can accept your 'conditions', if I were you, would give her chance, as we will never know whether the next newly hired maild would be good or not (like a gambling). But, smoking is hard to quit.. anyway to proof she could do after she promise? -_-". Good luck!!