Your dog looks real sweet and I'm sure she's quite nice but I admit I have mixed feelings about this breed. I've known some very nice ones and well behaved but I've also known some pretty nasty ones.
I can somewhat understand the muzzle law in public but I don't think it's fair to impose it in your very own backyard, that's private property and you and your dog should be able to roam that space freely.
What's your dog's name? She is one of the cutest I've seen