Thank you for the help. Here is the operator we found which got us thinking of the idea.
http://www.dualsportafrica.com/
Seems to be exactly what we want excpet for the rental bikes offered. Their smallest, XT660 Zenere has my girlfriend a little aprehensive due to taller seatr height and additional 160 lbs over her bike.
I will check out your link.
Thank you