Dogs are scared of people for a lot of reason and if she had some unfortunate experiences from a man that smelled or sounded like your husband it might affect her dealings with him. After this amount of time she should know he won’t hurt her.
However, if there are people in the family who have attempted to reassure her and as a result gave her attention when she acted scared, she would learn to act that way to get the attention. So some of it might be learned behavior as well.
Now there are things that can be done to help her. One is a dap collar. It uses pheromones to help her anxiety level. They are available at pet stores and work real well for anxiety. The other thing is to show her what your husband expects of her. You do this through training. This will require your husband to take an active role with the dog.
The fastest way to get her over this fear is for her to start training with her. If she already knows commands that will be great but he can also teach her those commands. The following site is helpful in helping owners train their dog. Be sure and click on the link to the page on obedience at the bottom. and links on subsequent pages leading to detailed instructions.
Training works best if you train at least 30 minutes a day (two 15 minute sessions). I would start making your dog work via the Nothing in life is free program (NILF). It is outlined below.
What this does is teach the dog what your husband expects when he gives a command. This helps her self confidence around your husband and leads to less fear responses. Additionally you can have him take over feeding her and if at all possible have him be the only one giving her attention.
In addition, you need to stop the behavior which is unacceptable. For instance keep a leash on her, when she fixates on him and starts barking, give a short tug to break her concentration and a firm low toned NO so she realizes that behavior is not acceptable. When she doesn’t bark at him, have a tasty hot dog treat ready to reward her. After a few reprimands and treats, she should realize that when she doesn’t react to him, she gets treats. This will also help her modify her current behavior.
I would plan on having him take over her care and start training her while you work on the behavior modification and use the dap collar on her. These should help. In most cases, my clients see improvement in just a few weeks especially if the husband will help by coming in and out of the house or room over and over again until she succeeds and can get the treat for not reacting.
I hope this information is helpful to you. If you would like any additional information or have more questions please don’t hesitate to press the reply to expert or continue conversation button so I can address any issues you still have . If you do find this helpful, please take this opportunity to rate my answer positively so I am compensated for my time.