Rock type and water isn't consistent with southern Utah, looks like limestone or granite. I've seen things from a few different Arizona canyons similar to this (online, never in person). Also have seen pictures from the old world that look very similar.
I agree that the rock looks different than what is seen in most of southern Utah. The water (in the distance) looks deeper than most stuff I've visited as well. I thought maybe lower Havasu, but I don't think that's it. Salome Jug also crossed my mind as well, but I couldn't find any pics to match -- and the subject's dress doesn't seem consistent with that type of route. Lady in the pic is from southern California, but seems to travel quite a bit. I don't know her personally, but I can contact and ask if needed. I was just hoping the BCP hive mind could help and prevent me from appearing to be a stalker! (In reality I *am* stalking the canyon!)