It was cold. It was so cold, and Imliss was gone, and she was so tired...
She closed her eyes.
She hadn't been expecting to open them again.
Dwarven cartographers do not recognize the place he sent her visuals from, at least not off her drawings of them.
She bounces the names on the maps to her husband in case he recognizes them.
Okay, cool. So that tells her where she is relative to them, although depending on how much they know about the area between them and Doriath the fuzziness of information might make it hard to plan a safe route.