When she left at night, Mami did try to be quiet, for Rin's sake. She didn't want the other girl worrying about her. Mami had to do what she did, she had to try to protect people. With her power it would be wrong to sit at home letting people get hurt and die when she could stop it. Even if it put her own life in danger.

"You don't have to worry about it, Tohsaka-san, I'm just going out for a little bit, nothing's going to happen to me." She gave the other girl a bright smile like she always tried to wear, insincere as it was at the moment.