here’s a scenario for you a fifteen year old girl around 5″4 is being attacked from behind by a grown man do you think she can shift the grown man’s center of gravity and lift him over her shoulders and throw him against the floor?

Yes. I’ve actually been thrown by a girl, about that size, in training. When it comes to throws: momentum, inertia, and leverage are a lot more important than size. Also, her strength isn’t even a factor; when properly executed most throws require surprisingly little force.

She’s slightly more likely to throw him over her hip than her shoulder, but, yes. If she’s been trained in throws, she can throw him.

For someone who hasn’t received training: throws are difficult, and can be pretty dangerous for both combatants. There are a lot of ways you can mess up your back if you botch an attempt.