We' ve all been there and it' s a crappy feeling. Take comfort in the fact that you didn' t take a bad shot (to your knowledge at the time), or rush a shot, or shoot at a bad angle. You did everything right. You even followed up the trail very well. I feel for you but the pain will get better. Just imagine if you hadn' t seen her with the arrow in her, then you' d never know why/wher your shot was off and maybe would have wounded another deer next time. Now the next deer is better off.