Disclaimer: Tolkien's the genius, not me.
They learned quickly to speak carefully in front of Elwing, this strange young woman from across the sea. A careless word about the past or even about the sea would cause her to seemingly shrink, retreating within herself, and fleeing to the easternmost shore, where she could be found hugging slender arms to her stomach, searching the horizon for a glimpse of something from Middle-earth.
Other times she could be found at some high window looking toward the Calacirya. She said lightly she was used to watching the West, waiting for her husband. The look in her eyes spoke differently.