It's the hug that seems to snap her out of just standing there and staring at the tunnel entrance without doing much else. If not just since the sudden hug practically forces her body to move a little, shaking her brain slightly back to Earth.

"O.. Oh!" She blushes a little at suddenly being hugged. Or maybe it's just the extremely cold weather. But after a second she shrugs that off enough to be able to hug Romeo right back as well. "No, you're the one who did a good job..! I don't know if I would have made it here if you hadn't been there.."