Easy way to raise your side stats is to tickle cream, keep tickling, peep in on her, and jack off. If you don't have enough jack off, she'll come out before you cum. Don't question me on why this is good. If you try this any other time, I'm not sure which events trigger the bathroom scene, but if you do it any other time than this, you'll cum on her dress when she comes out, which means you lose.