As a woman, may I ring in on this thread? I am a little late since you have already placed your order with Tom.
I think your wife will enjoy and appreciate the Leprechaun more than the Spry. The Lep is the best pack ever made in the entire world. It will be her go-to pack for every canyon possible. I have owned 5 to date.
None of the other ICG packs fit women her size very well. She may spend more time kicking and cussing that pack than saying, 'thanks, dear'. I suggest you keep the Spry for yourself and let her borrow/ trade with you on occasion to see if she would like a Spry of her own.
The 5.10 Canyoneers are horrible shoes. I own a pair and have used them 6 times in ten years. Wow, are they really holding up. I have descended hundreds of canyons in my Merrill Moab Ventilators. They are wonderful, fit well, and stick to the rock well. After a dozen years, Merrill has dumbed down the quality of this particular shoe. I am in the market for another comfortable but good for canyon shoe. I have my eye on a Keen. If you wore ZAC's shoes, you probably wore the bumble bees, felt their sting, and know if they will be good/bad for you.
A simple harness is the best harness for canyons. The Alpine Bod is good, but any basic harness will do. The fewer bells and whistles the better. I don't think you need to worry about a women's specific harness since they are all so adjustable.
May I suggest if you are going to spend the time and money to get 'real' canyon gear, that you also spend the time (1 hour extra) to drive to North Wash and do 'real' canyons? There are over 45 canyons accessible from that area and well over half of them are beginner canyons.
Dave keeps me mostly supplied with all my canyoning needs, but I am going to agree with Spinesnaper. Perhaps a silky/lacey something tucked into the mesh pocket of the Lep would be appropriate. (Tom will not be able to help you with this.)
Lastly, I would like to caution you about canyoning with just the two of you. If you are interested, I would be glad to host a canyoneering couple weekend in Nov.
Penny