I would agree with the high hit theory. My dad an I had a similar situation take place this year. He shot a 9-pointer and said it looked like he hit a little high. I told him to get out of the woods and wait for me to get there. I got there about two hours later and we started the search. It was dark and we only found a pin drop of blood where he hit the deer. After 2 hours I found the deer laying, not 90 yards from his stand. He hit one lung and clipped the aortic artery, I think. Anyhow, that deer lost virtually no blood outside of his body, not even a sign of blood on his fur. Upon field dressing it, it was apparent that all the blood filled inside of him, messy!!! Sorry to hear about your loss. That's the first time I've ever experienced a high hit, no blood situation.