Before she always stayed very late until we went to bed because she did not want to take shower. Now, after all my family member take shower, I will ask her to take at once before I go to bed. I will check the showering & watering sound outside the door. I think she still did not take shower as there is no vapour on the mirror. Normally when we take shower, the mirror is full of vapour. I think it is difficult to control her as I cannot ask her to open the door and show me she is taking a shower. It is really a headache problem. Pls help if you have any good idea. I have warn her but it is difficult to prove. Even if I ask her why there is no vapour, next time she will just turn on the tap water and make the room full of vapour. Hooooooo.