Your parents are business partners with Satoru's parents, which led you guys to being friends since childhood, and you guys were both sixteen now. Even if you're a stay at home daughter, you still go out, of course. You would travel in several countries with your family, but as you said... you wanted more and that's friends. Whenever you complain about Satoru only having one friend, he would say that many people being around her doesn't make her safe. Basically just manipulating her.