I agree with the first two suggestions in this, but with Preston's character, I wanted to provide a contrast between Cami's expectations of him and his actual personality. She expects werewolves to be hardened and tough and intimidating, so she's shocked when she realizes that not all of them are.
I love this input and these suggestions, and I will probably apply them, (as well as the ones in your first paragraph that I agreed with) but I think I would first like to have the entire story, flawed though it may be, drafted out. For some reason I have not done that yet.
This is definitely some great advice, and I will most definitely be using this when I get around to a second draft, doing the whole thing improved.