Dani really likes Willow. She reminds her of Finch, her girlfriend back home. She's smart and funny, quirky, compassionate and loyal. They're all attractive qualities and that's why she has a little crush on her, but they're also things Dani values in a friend and in a person. Willow is also a strong person and isn't afraid to speak her mind. She admires that too.

Now that Willow's let on a little bit more about herself, Dani's come to trust her and wants to have a better friendship with her, hopefully with something more open about who they are. Willow will probably be the first one to hear about Dani and the Angelus, which is a big step for her.

So, besides that, Willow has a friend in Dani and a loyal sword that will protect her if anything should happen. She cares about her too much to let anything happen to her.