U can ask her why she does not require to wash her hair anymore at night? She has to tell you the truth, right? Then you can tell her the "rules"...............
我個工人又係唔鍾意吹頭就瞓,初初幾日係咁叫佢吹佢都話 no need, ok ok..., 但係我都買咗個風筒,之後梗性要佢吹完頭先瞓!佢最初係咁二吹2吓就話瞓 (其實個頭都未乾,有8成仲濕),跟住我要佢再吹過 (因為我唔想佢病!)。而家佢都係吹到個頭5成乾就瞓!我冇再理佢,或者佢鄉下興濕住個頭瞓掛?