Thanks for your answers. I will try to get a Gentle Leader Harness tomorrow, to try it out with her. I was told a harness is what sled dogs use and that a dog can pull really good with them so I stopped using her car harness like one and went back to the collar.
With the snow disappearing, I can go out in a few days and throw a ball for her in our long back yard, and she can 'go' outside any time, but I thought she'd still need a change of scenery, hence a walk. Hopefully my husband will take her out, (it'd be midnight time but oh well), I'll see how it goes. After a few days maybe I can drive to the park and let her go, and then call her park after a while and drive her home again, what a unresponsible dog owner, maybe not then.