Likewise, I think the idea of such a young puppy somehow trying to "dominate" you to be a bit ridiculous. Even with an adult dog that understands the concept of pack hierarchy (which does not necessarily include humans), it is a dangerous mind-set to get into - because once you start blaming things on this much-misunderstood concept of "dominance" then it's far too easy to end up figuring you've got to somehow smash any rebellion, lest you end up being "lower" than the dog. Frankly, I wonder how anyone gets any joy out of dog ownership when they turn the whole thing into some unpleasant competition like that.
Your puppy is a baby. Like any baby, she's got no concept at all of what you want from her - yet. That comes with teaching. I can't understand why you would actually
want to have a baby puppy shrinking on the floor at the sound of your "no", or think that it's a good thing. All it means, btw, is that she understands that your husband is displeased with her and is intimidated by that (versus not being intimidated by your displeasure). Who wants to, or can achieve anything by intimidating a baby puppy?
That part is irrelevant in the grand scheme of things though - what's actually important is teaching the dog what you DO want

Just like with human kids, if you can teach them what you DO want them to do, and keep proper control of the rewards so that they're only rewarded for what you deem to be good - then you will get predominantly good behaviour. It isn't necessary to compete for some notion of dominance in that case. The problem we people tend to create for ourselves is failure to control rewards - we give things away for free, sometimes treat our dogs like little humans in furry coats, including in response to behaviours we don't actually like. Little wonder then, that we fail to control the dog's behaviour
If, however, you can keep control of the rewards in this puppy's life (a reward being anything the dog wants or enjoys - including food, including attention, including a seat on the couch, a game etc), then you WILL control her behaviour. All without any need of the gruff voice or pup cowering at the mere sound of "no".