Update: Herself's new Christmas wish

Thanks much. I did find out that certain parts of the Catrike are made in Taiwan. My guess is that will be unavoidable.

One thing I'm very interested in is the NuVinci auto-shift system. Herself doesn't care for some of the vagaries of the derailleurs. From the Terratrike site it states:

The NuVinci N-360 hub uses a continuously variable shifting system to give the rider minute control over the ride of their trike. It is a zero maintenance, zero learning curve, zero intimidation hub that makes trike riding a blast. There is no derailleur or fixed gears to worry about, and it doesn’t matter if you are pedaling or not to shift. All the rider has to do is twist the shifter on their handlebar, and the hub seamlessly increases or decreases the gearing immediately to what feels best for the rider. The gearing range goes low enough to tackle tough hills and high enough to satisfy the need for speed.

- See more at:
http://www.terratrike.com/rover.php#sthash.AChzzm7A.dpuf

We'll have to test drive both the Terratrike and Catrike to see which she prefers. It's about her comfort level with it too.