God, thats awful. I've never heard of a case of SA that bad. My puppy developed separation anxiety early on, I had to ween him off of it. It wasn't nearly that bad but I was unable to crate him because I was afraid he was going to hurt himself. He did rip apart some couch cushions. But I gradually was able to get him to the point where he can stay home alone and be fine. It took a lot of work. I also am home all day so I think they get spoiled, they don't understand we like to have a life on the weekends! I'm sure you've tried a lot of things, I'm just wondering if you started at the basic level: Leaving her in a room alone while you are home. Even if just for 5 minutes a day. Thats what really got me to the next level with my boy, he was just so used to being with me all day that he couldn't stand it if I left the room. I decided to separate him for a few minutes a day. Then increase it to 10 mins the next week. Then leaving the house for 2 minutes a day. Then 5 minutes. So on and so forth. The exact times aren't really important, just starting from scratch. The idea is to return before the anxiety sets in so the separation doesn't give them a negative association. Usually once they realize you will always come back eventually, they are ok. I've read that once you can leave them alone for 30 mins, they can be left for longer, because the worst SA usually sets in right after you leave. I went from a dog that would freak out if I went to the bathroom to a dog that could be left alone for 8 hours sleeping on the couch. Wasn't easy though.
I'm also wondering how much exercise she gets. Sometimes running around in the yard isn't enough. Have you tried really getting her tired out (I'm talking like a playdate with other dogs for a few hours) and then leaving her alone? If you could tire her out so much just once and then get her to be ok alone for a little bit, that could be a huge first step.
I always enjoy this issue because I'm still learning about it myself. But it's very possible there just may be cases (perhaps yours) that are beyond basic treatment.
I'm also wondering how much exercise she gets. Sometimes running around in the yard isn't enough. Have you tried really getting her tired out (I'm talking like a playdate with other dogs for a few hours) and then leaving her alone? If you could tire her out so much just once and then get her to be ok alone for a little bit, that could be a huge first step.
I always enjoy this issue because I'm still learning about it myself. But it's very possible there just may be cases (perhaps yours) that are beyond basic treatment.