I too was heartbroken by her cries of distress. I noticed Miley looking up and to the left during one of the times she nearly made it all the way through. Perhaps it was something like the Ice Maker or the telephone that spooked her. Something surely has, poor darling.
I'm sure you've given the doggy door a thorough inspection from both sides, so I can't imagine she hurt herself somehow going in or out. I wonder if she jumped up a little too high, or jumped a little too low and perhaps clipped her back on the top, or her feet on the bottom, that has her worried.
You are so sweet and encouraging with her! I hope you are able to figure it out soon. ♥
I thought Rocco looked wonderful! I'll have to go back and have another look, but I didn't notice any sparseness on his tail, but then I was looking at his sweet face, and Miley's.
Do keep us posted, please!