Okay, lets take a moment to think about this situation. A twenty something years old went back in time to the body of her younger self. Her mind has already reached maturity as a result. Are we really expected to think someone with the mind of an adult would sit back and take a beating for no reason? A child might not fight back in that situation for various reasons, but most adults would certainly avoid such things and as such we can assume an adult in the body of a child would as well. I bet all of us can think of a few ways she could have avoided this situation or at least mitigated it, so why can't she do it herself? Obviously it's because of plot, but still...
I'm a fan of angst and drama, but this is just ridiculous. Anyways, lets see how long this nonsense lasts...