I am a woman, every time I take a shower or go to the toilet, my female colleague always enters the

You didn't do anything wrong, it's her who is wrong, you say that if she doesn't listen, she will find a way to lock the door of the toilet or bathroom, you have to know that the world is too big, everyone will have it.

Close the door, I've never seen such rudeness, next time I'll slap it twice, "I'm sorry to think that pervert came in".

Of course yes, it's because she's too inattentive. Talk calmly and say that you don't mind.

That's right, you can lock the door when you take a shower.

Dormitory? If there are too many people, you can understand it.

Why don't you close the bathroom door?

It depends on whether you are familiar or not, but listening to what you say, it should be unfamiliar.