****UPDATE****
Searched for about 6 hrs this morning. Lost the blood trail about 50 yds from where I left her last night. I did find a 5" chunk of her tail lying on the ground where I marked last blood last night. I was certain she would be laying in the thicket half chewed up but she was gone. When I grunted to stop her last night she turned back to look and rolled her shoulder back. Instead of tucking the arrow tight behind and have it come out of her chest it hit bone and probably shot forward in the chest cavity. Lesson learned.