That scared the hell out of me. Finding out that Maruyama is Tomoharu's friend is one thing, but she even managed to find Maruyama's address? And even waited in front of the house? Girl, should've used that effort to give it to Tomoharu directly.
edit: okay, I reread it and realized it's not stated that it's in front of his house. Still find it strange that she went as far as to follow Maruyama though.