Perhaps you could put together a little skills clinic if your own to help her learn the basics. There are some decent tutorials on the web to help get both of you started. I hear you in terms of watching you from behind, but haven ridden behind my husband a fair amount myself, it's better that I learned to read and watch the trail myself than watch him. If nothing else, go out to the trail and do some session work. Meaning, stop and practice skills on specific, instructive parts of the trail. Have her watch your technique and then have her try it. If she's resistant to learning from you, ask her if she'd be willing to work with another rider. Perhaps you have a friend who could help her.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher