I was at my ex house once, and she mentioned that her parents wanted me to speak to them when I came over.... so yea, you sound like a parent right now. Not a roommate
I understand how you feel about the guy she had over ignoring you, but I would either take it up with him, or leave it alone. She can't control him not having any manners, and it's HIM you really had the problem with. You didn't say anything to him, so just let it go unless you see him again, and it happens again. It's really not a big deal tho, that guy probably had no idea it was your place. If anything just stop acknowledging her guests, now that you know they're rude
I understand how you feel about the guy she had over ignoring you, but I would either take it up with him, or leave it alone. She can't control him not having any manners, and it's HIM you really had the problem with. You didn't say anything to him, so just let it go unless you see him again, and it happens again. It's really not a big deal tho, that guy probably had no idea it was your place. If anything just stop acknowledging her guests, now that you know they're rude