Chewing a definately a puppy thing. What I do with mine is if they chew on something they aren't supposed to, I tell them NO and give them something that is acceptable to chew on. If they STILL don't stop chewing on what they aren't supposed to chew on, then I pop them with an empty paper towel roll. It doesn't hurt them, it just makes a noise and gets their attention. (I know some people may disagree with this, but it works for us.) Now all I have to do is show them the paper towel roll and they stop doing whatever it is they are doing. Works wonders for us!
She will eventually grow out of it, but I know how big of a pain (literally) it can be with their sharp teeth!