I was recently talking to my vet about my dog Teddy and storms. He had a seizure a day or two before a storm hit and I was wondering about the link. She did not know, but she did tell me that it is known that the intercranial pressure in dogs is greater than in people suggesting that dogs are more sensitive to weather patterns. I wonder if this is what is going on with her. But, it is concerning that her personality has changed and I wonder if something is going on with her brain that is exacerbated by storms. Do you see any neuro signs like head pressing, ataxic gait, anything like that? Maybe you can video what she is doing and send it to your vet. I am worried that she is keeping her tail down and acting depressed. It does seem like something more is wrong than just storms if she is having a personality change for a few months.
I'm sorry she and you are sleep deprived and that she is not feeling well