John, she didn't mention the route name, but said it was a long route with plenty of acclimatization time, so I'd guess Machame, which has the highest success rate, or maybe Lemosho? I know a couple of folks with my company who have summitted Kili within the past couple of years, and they both took the Machame route.
Karen also mentioned spending a night at 18K-plus feet on the crater rim. That should be a blast!
