Emma has noticed that about Lily. Even hearing Duncan's name makes her giddy. Her plain clothes and slouched shoulders seem to disappear, and she smiles.
In the narrative of "Sleepless" by Thomas Fahy, Emma observes a significant change in Lily whenever Duncan is mentioned. It reveals the depth of Lily's feelings, showing that Duncan's mere name has a powerful effect on her, filling Emma with a sense of giddiness.
This transformation in Lily is striking; she sheds her plain appearance and timid demeanor, showcasing a more vibrant side of herself. It highlights how love or infatuation can uplift a person, making them appear more confident and alive, even in the midst of their usual struggles with self-image.