There may have been a blood trail and it may have been quite limited as well. Keep in mind that the doe was not even injured to a point where you realized it was injured.
Interesting t that you said she should not have been hit as she was and yet you didn't even realize her actual size OR that she was injured. You shot an animal smaller than what you thought it was.
You have assumed the hunter did everything wrong with hunting this animal without you being present. The doe could have been hit via a through and through of another deer. and the hunter not even know.
"If you look through your scope and see your shoe, aim higher."
-- said to me by my 11 year old daughter before going out for hogs 8/13/2011