That Dain waits that long is partly strategic, and partly arrested movement. Even if there were nothing wrong with him leaving right away, he suspects he wouldn't be able to move.

Tuo down the street, and Lorne in the kitchen behind him. In another time, another life, another country --

-- that's not going to help.

With several seconds and a very deep breath, Dain wrests some semblance of level composure from somewhere, and he steps outside, closing the door gently behind him, leaving Lorne to the kitchen and to his family.