Okay. Just as in humans, the longer a behavior pattern has been present, the longer it takes, and the harder it is to break. There is a product called "Bitter Apple" available in pet stores or from veterinarians that should help a lot in stopping this unwanted behavior.
Spray a cotton tipped applicator (Q-Tip) with the product and place it in Dixie's mouth. Hold her mouth closed on the Q-Tip for a few seconds to be sure she's gotten a good taste of it. Then, spray a very light mist over your hands, arms and anything else she tends to be able to reach to lick. Do not spray your face, just don't let her lick you there.
WARNING: This stuff is horrible tasting and be careful not to get it into your own mouth or you'll understand all too well why it works!
After a week or so, try not using it for a day, she may not persist in the behavior, but if she does, use the spray another week. Keep using it with an occasional day off until she's out of the licking
If you have further questions, please let me know.