Hi, I'm new here and new to huskies. Just rescued my first one two days ago. But I've been doing a lot of reading, and from what I gather, they're not too much different from Samoyeds. And I've had my Samoyed now for 9 years.
I also didn't see the husky's nipping as aggression, but maybe rather playful. Huskies are very mouthy. Mine uses her mouth to grab and she growls anytime she wants attention. It's not a hostile growl, but rather a "notice me, play with me" growl. Perhaps your friend's husky likes the baby and wanted to play.
It could also be that the husky was "herding" the baby. My husky is trying to herd or roundup my two cats. She doesn't hurt them. She just corners them somewhere, as if that's her job, to corral. Then she's happy and walks off. In the two days I've had her, my two cats have already learned that my new husky is not a threat.
Another thing I would like to mention is that no child should ever be left unsupervised with any animal EVER. There should always be close supervision. Both children and animals are unpredictable. And even the sweetest, gentlest animal can get vicious if a child hurts them in some way. Children often pull tails or get careless, and injured animals just react without thinking. My Samoyed will snap at me if I accidentally step on his tail. He loves me and would otherwise never hurt me. But he does snap if hurt. I don't consider it aggression really, just a shout of OWWWWWWWW, DON"T DO THAT, YOU BIG CLUMSY GALLOOT!
One last thing, if the dog's owner doesn't feel she can walk the dog, she needs a fenced in yard so the dog can just run free. They're easily bored and need entertainment, much like children do. They need physical activity to work off their energy and keep them from getting bored and irritable. If she doesn't have a fenced in yard, maybe she can set up "play dates" with another friend who has a dog and a fenced in yard. I do this with one of my friends. Her little Scotty just loves my Sam and they have a nice fenced yard. So the two dogs lope around the yard together chasing squirrels while my friend and I work on a project. When I get Sam home, he crashes on the couch for hours. LOL
Huskies, like my Samoyed, are powerful, energetic, ambitious animals and thrive on activity. Your friend's husky would probably quickly learn some of the rules of football if her older kids wanted to play. They seem to be intelligent and easily trained. So spending some more time with the husky might be a solution.
NancyAnn