Perhaps you could take her to the BWCA first, and if she had the pit toilet there it would be an introduction.  Then if you wanted to try the Q she would already be hooked!

I am female, 60 years old, and have been hooked for 35 years!  I am richly blessed to have a husband who does more than 50% of the work, but I do work hard contribute a great deal.  I can't imagine, this many years later, our marriage or our lives without our canoe trips.  We don't "endure the adventure" we "embrace the adventure".

Tell her I said to give it a try just once!