RE: Any advice?
Ok ... your sure that it was a gut shot but don't give up hope , the next time you go out check the area in which you shot her , sometimes they'll circle around.
When looking for any type of blood trail , you might have to get on your hands and knees to look closely for the tinyest speck of blood.
If your in some tall grass look at the sides of the grass for any type of reddishcolor and look for bent blades of grass or twigs.
When a deer is hit like that it well head for the thickest cover it can find and it will also head for water , if you have any thick and I mean real thick stuff like a brair patch anda stream or creek near by look there.
Good luck on your quest I really hope you do find her.