What you should have done was immediately called the police and had that dumbass arrested for assault and battery, and had the dog and your husband inspected for injuries and take all kinds of photos of evidence.
What happens when she gets away with it? She will do it again, and get progressively more violent and end up killing someone with her ignorant rage.
As far as Huskies go, they are the closest descendant to the wolf (after descending from the spitz), and they do have that hunting instinct. Killing small various wildlife is just how they protect their pack. There's no way to prevent this, as you obviously can't socialize them with every creature in the city.
Huskies are very friendly and aloof, and aren't afraid of strangers no matter how tall. But, they aren't pushovers. You get on their bad side or piss them off, they will fight back ferociously like the strongest of Dobermans, no doubt.
My Husky of 7 years and counting, male, has killed enough critters for me to start putting tally marks on his chest like a WWII bomber plane! But luckily he was raised around cats, so when a stray cat comes in the yard, he doesn't automatically kill it.
He tries to be friendly, but cats of course don't want nothing of it. They just get spooked and he gets slapped in the face. I caught a stray cat before and brought the cat into my home, and even though he'd never seen the cat before in his life, he wanted to check it out and play with it like he used to with my old cats. He would go into a play bow and prance around the cat when the cat would stiffen up and hiss at him, not knowing the body signs for when a cat means "no". lol
I also have two anklebiters of Poms and he loves them to death, he gets so sad and cries while he watches me wash them, as they are soaking wet and they smell and look different to him. He accidentally steps on them or tramples them sometimes when he gets all crazy and runs all over, but never has hurt them. (People say that Huskies kill all small dogs >_> )
He did meet a possum before, but he was confused at it and was poking it with his paws trying to play with it, thinking it was a cat. It was a baby one that couldn't fake death, so it just huddled in a corner and hissed at him, so he made a howly commotion about it which alerted me to investigate. No idea where the mother was but luckily she wasn't doing her job, lol
He also bent a cheap metal tie out stake in half like a taco and ripped it from the ground while chasing a baby raccoon up a tree at the state park. The poor raccoon was up there shaking so much the branch was vibrating.
He can also feel gophers tunneling in my yard though his feet, and digs out all their tunnels, much to my chagrin of having to fill in lunar craters. I'm certain he can out-hunt a bloodhound!
Back on topic though, rabbits are easy for him to catch, as he sneaks on them from behind, and then bum rushes them while they are frozen in fear. No suffering, as they die within 8 seconds of his bite, it happens too fast for me to see, but I think he flings them by their necks, there's never any blood or broken skin on the rabbit, not that I want to touch the thing after.
He drops his kill prize though right when he sees me approaching him and trots off a distance and watches me, so never had an issue about them hanging onto it. He kills for sport, he's horrible. xD
I always hose his mouth out at an outward angle with the garden hose afterwards, and put dog dental gel liberally all over his mouth after it happens. Never had an issue with parasites or rabies in all the years. One rabbit he cornered bit him on the lip last year, and I put disinfectant on it and nothing bad happened there either.
He also found a freshly-dead Cardinal that fell out of a nest and was rolling on it, and squashed it and had bird blood all over his cheek. Same washing ritual performed and nothing ever happened.
He doesn't discriminate either, he's even tried to kill jumping spiders before, crawling around his water bowl. I'm like WTF? What's the matter with you? lol
But yeah, stuff like this happens, life is life, you cannot punish them for it. It's instinct, cannot be suppressed.