Questions: Girl's Behavior

My wife is 28. When we sleep at home or somewhere where there is no one else in the room, we always sleep naked.

When she visits a toilet at night, she doesn't put anything on. Of course, it's okay at home. But she does the same even if we are not alone: for example, if we rent a house with a company of friends on holidays, or if someone stays at our house.

Of course, when she leaves the bedroom, she makes sure that there is no one there, the light is off and it seems that everyone is sleeping. But some risk definitely exists. There is a possibility that someone doesn't sleep but stuck in the phone on the sofa with lights off. Or someone can come out while she is in the toilet.

Can you choose, what emotions in your mind her behavior creates? What would you think if your female friend said that she behaves like that?