Getting turned on and aroused both refer to wanting sex and being wet – at least when your a girl!
Its very normal. In fact, most 13 years do get turned on and feel aroused. You may not respond to all sexual queues yet – and will tend to like things that are a little more child like – things like a cute boy talking to you will arouse you while the idea of having rough sex won’t.
As you get older, the rest of the ideas that girls have about sex begin to happen and arouse you. It’s a slow process of growing up and getting ready to be aroused more and more.