Hiya Patti, welcome to ThePhotoForum.
Taking portraits in bright sunshine has shown to be not such a good idea for bright light also always casts deep shadows, and that often doesn't do a face any good.
That may also be why you like the last photo best: she is either lying in the shadow or a cloud covered the sun in the moment you saw her there and said "Don't move", and the light is very even on her face.
In 1 the bright sunlight almost blows out her face and in 2 you would have needed to fill up the shadows in her face with a bit of fill-flash, I think.