I just completed a two day tour of Canyon De Chelly and strange coincidence also had Sally as my guide while in the Canyon. First day I drove the North and South Rims with all the "tourons". Second day was in the Canyou for 5 hours with Sally guiding and telling stories. She got very emotional (and so did I) when she described the massacer of 1804. Unfortunately you cant choose your guide other wise I'd recommend Sally.
PS: Sally was really worried she might have gotten some scratches on the Earthroamers. She was relieved when I told her where Scott's had been.
Alan