I had a similar doe that jumped the string and ended up intercepting the arrow with the back of her head! I knew it would kill slowly and by infection, because the razor head failed to fully penetrate! After a very long track over several properties, she passed on to land I could not cross. I know your pain. As a result I now hunt with a crossbow for the .higher poundage and greater penetration. Now a headshot IS a kill shot, and it doesn't damage any meat. I'm glad to see there are hunters who care about doing the right thing
The only real difference between a good tracker and a bad tracker is observation. All the same data is present for both. The rest is understanding what you are seeing.