Honestly, she'd be better off getting a really good vibrator - sterile, impersonal, efficient, and only does what you want. I think she wants someone with experience to "teach" her, when the best way to please someone is to know what you like.
As others have mentioned, this is so dangerous! Plus, on a much lesser note, when she is in her first "serious" relationship, the old reminiscing about how you lost your virginity is bound to come up. Can you imagine explaining this to someone you love in a way that makes sense?