If she's ever fantasized about a sexual scenario that is completely devoid of doubt, guilt and insecurity, while at the same time completely primal, then taking BBC is definitely for her. She is free to do whatever she wants without a second thought, and enjoy the most sublime feelings of sexual affirmation and true self-esteem. It's like masturbating with real people as your porn. Plus the excitement/fear of being completely consumed in every way makes it all the better, so tell her if she's nervous about it, then that's the best time to give it a try.
And that's just the mental side of it. Needless to say, she'll be licked, sucked, touched and fucked in ways she never thought possible. She's a sexy girl, so I'm sure you'll have no problem putting her and that slutty tongue ring to use. I'd fuck her in a heartbeat.