Feats of Strength

I'm sure many of you out there have seen the Disney animated classic Beauty and the Beast. As cartoons go, it's one of my favorites. But I've decided that I have a slight problem with a couple scenes in the movie.

There's a scene where Belle is frightened by the Beast and she runs away from the castle. She and her horse are quickly attacked by a large pack of wolves. Luckily she's saved by the Beast, who then collapses from his injuries. The next thing we see is the Beast lying slumped over the horse's back while Belle leads them back to the castle.

How did the unconscious Beast get into that position on top of the horse? Am I to believe that Belle was capable of lifting a 500 pound monster onto her horse?

Later, during the climax of the film, the Beast is stabbed in the back by the bad guy. The pompous Gaston then falls into a ravine. And the Beast almost falls backwards too, but then the incredibly strong Belle is able to save him by grabbing his cloak and pulling him back onto the balcony.

If she's that strong, why couldn't she fight off those wolves herself earlier? How was Gaston able to manhandle her and her father when he went on his Beast-killing rampage? It just doesn't make any sense!