Re: Home Stay
I think this girl has a lot of nerve taking advantage of your hospitality like that. You're not wrong to ask her to follow those simple requests while living in your home. She sounds like an ungrateful person and it's no wonder no one wants to hire her!
I'm surprised that she is that way. I work with many Japanese people and they are way more respectful and humble than that. They feel ashamed when they do anything upsetting to their hosts because they are really respectful usually. Sounds like she is just a bad seed.
I'd let her go ahead and leave. You don't need that kind of aggregation. I'm sure for every person like her there are likely many more who would not only be more grateful for the opportunity but they would treat it as a blessing and act accordingly.