My Univega is a very similar setup to your fiancee's Lotus. Speaking as a girl who also doesn't like to go ungodly fast, I recently upgraded to an entry level modern endurance bike with integrated shifting and it has made a WORLD of difference. I always hated the DT shifters and I find climbing much less daunting with the lighter weight of the bike. Integrated shifters will allow her to focus on climbs/descents without worrying about losing control by reaching down when she is already pushing hard. Nevertheless it's awesome that she is willing to work so hard! I would be proud of her too.