Fun fact about elves, proper was or not, were the glowing eyes at nights. Reflecting light back the same way as many of the creepy crawly things out in the desert, so all the more reason Sera didn't try to hide the fact she was walking anywhere. Stealth was all well and good, but not when it was gonna get you shot because some guard took you for a toothy snake sliding down the rocks. She wasn't on watch herself, but after that stupid Tevinter fort hadn't been much for sleep, so had gone out hunting some of the semi-edible things that only came out when the sun went away.
Night watch
"It's you."