It's possible that she's licking herself due to anxiety. Does she have any chews with her in her crate? Anything appropriate that she can lick and chew to help relieve some stress? You can try giving her a frozen stuffed KONG toy in the crate. I stuff mine with a little bit of peanut butter, some wet dog food, and then freeze it. Nylabones are also great crate toys because its unlikely they're going to get large enough pieces off to become a problem, and they're a very long lasting chew.
Licking is also a symptom of allergies, so you may want to speak with your vet about that, too. When my dog struggled with allergies, it was not unusual for his paws or his bedding to be soaked with saliva because he was licking and chewing so much. One time he licked and chewed his paws on our bed, and there was a GIANT moist spot of dog saliva. I couldn't believe it, and he's only been there for 20 minutes.
Licking is also a symptom of allergies, so you may want to speak with your vet about that, too. When my dog struggled with allergies, it was not unusual for his paws or his bedding to be soaked with saliva because he was licking and chewing so much. One time he licked and chewed his paws on our bed, and there was a GIANT moist spot of dog saliva. I couldn't believe it, and he's only been there for 20 minutes.