I am not understanding the muzzling the dog for urinating on the bed, you will have to clarify your reasoning for that. Once you have ruled out a medical issue, I would not allow the dog on the bed, period. It is YOUR space, not hers and so for a while she has to sleep in a dog bed on the floor or in a crate. She loses the priviledge of sleeping with you on the bed. When you start allowing her on the bed, it is by invitation only. It is your space and not hers, she is not allowed to growl at you on it, tell you she wont move, nothing. It is your space and if she doesn't like the rules she gets taken off the bed.