What if my girlfriend dyes the hotel bed?

According to common sense, I think your girlfriend also wants to tell the hotel, but because of face, she is embarrassed to say it. Besides, if she did, the hotel would be firm, so she chose the simple method.

Actually, I don't think the hotel needs to call. It is very common for female students. If they don't like it, they can not let the female students stay, or they can fill out a form stating their menstrual period before moving in. However, if this is the case, the hotel will not operate.

The hotel accommodation fee includes the loss of bedding, and neither the hotel waiter nor the boss should be responsible for it.

There is no need for your girlfriend to blame herself too much, and there is no need to compensate for any losses.