I just found this thread and OMGish! I made my dh come and look at that horrible picture. I just can't imagine what your friend went through.
I was glad to hear Chloe is feeling better and the vet was pleased with what he was seeing. I will send prayers and warm thoughts for your friend and little Chloe's recovery.
I had never heard of anything like this. I am going to share this with my groomer and question more about the equipment used.