I think all of the above posters have given good advice. Essentially, the problem is due to the blurring (by you, and therefore by the dog) of two distinct activities: 1. Tracking wounded deer; 2. Obedience while accompanying you on a stalk. The blurring exists because you, understandably, haven't wanted to squash the dog's drives and also, quite likely, because she sensed your delight at whatever she seemed to track as a younger pup.
Personally, I would go right back to the beginning and rebuild the basics. As suggested by others, use an equipment cue for all tracking (I use a separate thick collar with a cowbell and a chemlight attached). Go back to laying blood tracks and stop using her to track deer for the time being. Make it very clear in her mind that she is a 'blood-tracker'; not an 'anything tracker'. Once she is hitting the blood 100% of the time, introduce some distracting cross-tracks (walk another dog across the track at some point, etc.) and keep building until 'blood-tracker' is firmly imprinted in her mind. Only then, reintroduce her to live tracks.
Separately, is the issue of obedience. Different equipment, different cues, different attitude from you. Don't be 'pleased' when she picks up a scent; be insistent upon good obedience. Almost act like she is not a deer-tracking dog at all. Her job is wounded deer; healthy deer are off the menu (and she will understand this as they smell very differently to a dog). Be kind but be firm and insistent: she will get the point very quickly.
On a separate note, personally, I avoid taking a blood-tracking dog with me on a stalk. They stay in the truck until I need them. This is because any dual-purpose dog requires compromise. One sees it in police, security and military dogs too: general-purpose police dogs are quite good at arresting bad guys and quite good at doing public relations by visiting schools with their handler. However, if you need a dog that will run through a burning building, under gunfire, and engage with a lunatic swinging a sword, you need a different dog: a non-compliance dog that is kept in the van and 'doesn't do playgrounds'. Both are valuable dogs but in different ways. To some extent, you have a choice: 90% good at two things (which is good enough for most) or 100% good at one thing.
V best,
Carl