It means she is secretly an alien from an uncharted planet here to eat your brain and take over the world through hostile conquest. Scary stuff..
It means she wants to have sex with you. Give it a try. Next time you see a girl wearing a ring on her right hand just smack her ass and invite her to bed. And then have fun lying on the ground when she crushes your balls.
I know without asking, she was into the blues... https://www.youtube.com/watch?v=Kj_kK1j3CV0&feature=related"]YouTube- Grateful Dead - Scarlet Begonias