Sometimes the blood trail will be there but so sparce that it is almost impossible to follow, but usually it is there, very easy to get caught up in the excitement and misjudge where the animal was standing by a few feet, especially true with a pass-thru. Great job reading where the doe went, the only thing I would have done different, and something I ALWAYS do is after I find the animal, I will back track the blood trail and try to figure out why I didn't find it as easy, usually tracking from the animal back to the shot site is surprisingly easy and great practice for finding and tracking animals in the future.