Help with names for my book?

I would stick with something fairly "normal" for both your main character and her sister. Maybe Bridget for main and Genevieve for sister. You could def go for something a little more adventurous for the guy. I like Paxton. Then I like Maia for your villain. I know it's awful, but a pretty name on a person you really don't like is a total bummer. You know you can't help but think "what a waste". Hope that helps!