He really is so stubborn. They've already had the bulk of this conversation. He's not wrong in his previous point that there's no guarantee that the train is safer -- even though she would certainly hope it was.

She also knows him well enough to know that he'll try to follow as soon as she has her back turned. So while it goes against every instinct she has, in this case it's perhaps better to let him come and make sure that she can keep an eye on him.

Blowing out a breath, she eyes him back. "You have to stay close, then. That's a requirement."