She hadn't necessarily expected a response, and if not, she'd have been content to sit a while, simply enjoying the fact that he was actually still alive. The pleasure was, she knew, deeper than just relief that a friend had survived, but despite them steadily getting closer, she wasn't sure how far it should... could, go.

"Optimus." She smiled and tightened her grip a little. "If your name was easier to shorten, I'd have found something by now... Magnus was as hard, and I had to give up." It might be a very off-hand comment, but she did want him to know, not just by her presence, how important he was.