If Roxy is so strong and powerful - get her stronger toys. I know one big dog who loved to flip around an old tire - even Roxy would have to spend a lot of effort to destroy a tire! Keep trying different things and play with her. Get big chunks of wood to play fetch with with her if she just chomps sticks apart, etc. A bored dog is a dstructive dog. A tired dog is a well-behaved dog.

I am going to shut this thread, as I don't think it is doing any good any more.

Please, Roxyluvsme13, reread this with everyone's suggestions and positive wishes for Roxy herself.