It is definite classic food aggression and resource guarding. This is nothing that is an "easy" fix, I would recommend meeting with a trainer to get her out of this as soon as possible. For now, I would definitely keep her on a leash, and feed her separately, away from the other dogs, and after the other dogs. I would also give the poodle some one-on-one time, walks and pal time by herself, etc., just to build her confidence back up. Do not "baby" her, though!

I am sure the husky is terrified and confused, she has had so many changes in her life in short period of time. I would contact the place he adopted her from, see if they have any recommendations for good trainers they have worked with. Bless him for adopting her, and whole the next few months may be challenging and difficult, I know you can all get through this.