My Daughter Jumped Wrong On A Trampoline A Few Hours

My daughter jumped wrong on a trampoline a few hours ago and has been in pain ever since. I tried to have her stand after sitting for a while, but it looked like her legs were going to give out on her. So she can't put any weight on it and can't lift/bend it without crying. So far there isn't any swelling and no discoloration. Could this possibly be a sprain in her shin?