Since this new bone seems to be a trigger, I would certainly get rid of it (not the dog) - right away! Once he learns that he can do this behavior with one thing, it WILL extend to others. It is just a matter of time. Because he only associates the behavior with this one bone, even giving it to him when your daughter is not around is a mistake. You are letting him know that the behavior is acceptable when he has it.
Your daughter (or any family member) should be able to go up to your pet at any time. Doggie is trying to prove that his status in the family "pack" is now higher than that of your daughter. You and he both need professional training in showing him that he is not "alpha" dog to ANY family member.
Basically if any of our three 50 pound plus German Short-haired Pointers ever showed any agression of ANY sort, we would make them roll over onto their back and put our hand on their belly (lightly) to "hold" them in the 'submissive' position. This is what a pack leader (alpha dog) does to the other members of his pack to 'discipline' them.