My suggestion, if she is familiar with lifting at all, is to give her space. From the mention above, and in the article, it states that our women can be most imtimidated by us guys. We're the hot-shot know-it-alls. I mean, we're the ones putting up 400 lb BP and they only have 60 lbs. I'm sure you can gloat over her plenty and help her with form, breathing, timing, etc. But I tell you what, in the beginning nobody wanted to hear all that. She wants to hear what shes doing right, not everything thats wrong (though you shouldnt let everything slide).
I would say if you go together, direct her but don't dominate over her. She's gotta find those exercises, probably much like you, that she loves. Show her what routines you enjoy and let her feel things out. Ask her what she would like to improve, and show her what she can do to help. Even if that means tricep kickbacks, instead of dips or close BP. Silly, but you gotta give her reasonable goals at the beginning.
I betcha, one of the biggest reasons she would like to go is to be with you. If you're critical of every single thing, she won't want to go with you ever again. Encourage and direct. She'll figure it out over time. And start her at med to low weight. A month of getting an exercise movement down is better than an injury.
My 2 cents.