Tail up is such great news! Bless u and your husband for taking in Skye. She's so lucky to have found you guys. It's really great that she took to your husband so quickly too!
Hmm..maybe in addition to the usual daily stuff you do for her, you could try doing some obedience training with her using a clicker and yummy treats (like cheerios or boiled chicken breast)? It may take some time (and I've never had a rescue before), but I feel confident that some daily training between just you and Skye should do it.
Dogs have a way of associating the clicker sound with treats really quickly. And then, she'll associate you with fun times and yummy treats. I'd first do it when your husband is out. And then, I'd do the training with your husband in the room but not interacting with you both.
If she's biting you. You could start by clicking when she follows a command (such as sit or down or stay) and then lay the treat on the floor. And then gradually hand-feed the treat. I like to think by eventually hand-feeding the treat, it'll allow Skye to trust you and then not want to bite the hand that feeds her in the future.