The next location Xin Feng wanted to go to was in a completely opposite direction from where Haru Ato lived at. Hence why, Xin Feng did not plan to visit him again. There was no point in going there, and leaving Maeda there would not be a very good idea, as he did not know the guy's entire character. This meant that Maeda could only follow along with Xin Feng, which is obviously the only thing she would probable prefer.