Come on! This is Haley we are talking about here. You know, the girl with the fake boyfriend! [EDIT: In the Sandra route] Her default response is to make light of something by some flippant remark. She has done exactly that since the beginning of the game.
But, in those quotes I provided, she was dead serious.
If you want to wring your hands over Haley not moving in with Adriana and the MC (if you are in that route), go right ahead. I've got better things to worry about in this game, so I won't be joining you.