And she’s so lost in her own life that when she hears the name of Luke Skywalker here, she doesn’t even believe it’s real.
And in this scene, she had never heard of Luke Skywalker, which didn’t really make sense, because later, she’s heard of Han Solo, and she’s been wearing the Rebellion helmet, you just didn’t quite buy it.
And the idea is that Finn brings this hope to her.
That allows for Daisy to sort of fall for this guy that’s this daring, brave, good man, but of course he’s lying.