Thanks to Catchar, I discovered the FaceReplaced app. I installed and in less than 5 minutes had a very interesting little video. The following gives you an idea of what FaceReplaced can do but, yes...I hope you are viewing this on a mobile phone, as it seems to be upside down. This is a normal little hiccup for an app in beta. THIS BUG HAS BEEN FIXED.
FaceReplaced works exceptionally well, with no installation friction, and almost no learning curve.
I am now thinking of a way to get Bubiko in FaceReplaced, so that she can read sections from her book about AR. The challenge is that Face Replaced works best with real 3D objects, and at the moment, I only have Bubiko in 2D (paper) or as a digital adventurer in 2D videos and photos.