Is My dog a monster, who needs to be put down?

I have a 2 year old Siberian Husky, we got her from my neighbors who got rid of her for killing a pot bully pig and a rabbit. But see there is a reason she killed it, they neighbors leave for a week at a time and won't feed the dogs in the back yard, and so they are all was hungry. ONe time they ask me to feed their dogs while they are gone and I did and they each had to have separate bowls so they did not fight,(or kill each other over food). The pig was in just a little enclosed area in the back yard with the dog as well as a the rabbit. We got her at about 7 months old and she as never killed anything since except maybe a bird in the back yard.I know husky have high prey drives. We have had cats in the past and she always plays with the cat, sometimes to rough but just playing, now baby kittens is another story we have to keep them away from them because Im afraid she would, but never has, She even leaves with a ferret in the house, and the cage is in the same room as her. When the ferret comes out of the cage we have to lock her in another room, but other then that she does not bother it. With the ferret im not even sure she wants to kill it I think she just wants to play but doesn't get small animals don't play the same as her. I would never put her down for this, but my brother and sister and their mom call her a monster, when I know she's not. What do u guys think. Thanks!