I taped it and didn't watch it yet, so what's above is about all I read of your post so far. I would have to agree, with maybe one exception: the diversion with Isabel becoming a child again and then having it reversed the following episode was just a waste of time. About the only good thing was Kyle's attempt to rescue her to cement their relationship.
I'll refrain from any other speculation or comments until after I've seen the episode (likely this afternoon or tomorrow.)
If you haven’t seen it yet, you are in for a treat!