The back of a couch is a favored thing to do. You may want to consider to rearrange your furniture, where your couch sits along a wall.
They can also easily wiggle them self out of young children's arms and hands,while standing. From that heights, a Papillon can break a leg or more easily.
Especially Papillon puppies are most fragile, and you should be very selective, who is going to handle your Papillon.
Make everybody sit on the floor, while handling your dog.