Just by listening to the opening, I initially thought that it would be tranquil, relax-music-type throughout the piece.
But it isn't I love how well-redeveloped the motive is, and the way you build up the emotions considering it is a short piece.
It sounds like a couple who have been separated for a long time because of a war, but they don't have much time to share their experience as they have to leave each other again. So desperate but got relieved knowing the beloved half is still alive and safe.