I agree that your friend should look at Hostle Shoppe. I've always been pleased with their service, etc.

One other company she could consider is Lightfoot Cycles.

http://www.lightfootcycles.com/trikes.php

Their trikes are taller (easier to get on and off of) than the general run of recumbent trikes - if that's a problem.

I've been considering getting one of their trikes for touring. They seem well suited for that - or general grocery-getting.