Who plays Cassie Jo Stoddart

Why? Got a crush?

I'm watching that episode now and I'm 15 minutes in and the girl annoys me. Why is she opening up someone else's package? Why if you hear something upstairs you go upstairs and why is a 16 year house sitting that big house by herself in the middle off no where and why did she not go home with the boyfriend if she was so afraid. They were bringing her back in the morning. She was so annoying. The actress was good though. Lol