How can I get my friend to be closer with God?

My best friend is catholic. Im not putting catholicism down in any way, but sometimes i feel she doesnt get it. She goes to m every sunday, but when i see her, i can tell she doesnt have that relationship with God that she really needs. She constantly curses and says inappropriate things, and watches all kinds of rated R movies. Even though she does this, she still believes she is going to Heaven since she goes to m every sunday. How can i tell her nicely that she should get closer to God without bashing catholicism or her? In case you were wondering, im a non-denominational Christian and we're both 15.