Ok, so i'm trying this out and the first thing I notice as soon as I get control is that sprinting is too slow.
Now, I don't mean that you can't move ariound the level fast enough. I've moved like five feet so I don't even know how big the levels are, but it LOOKS and FEELS weird because she's taking big steps and her legs are moving quickly but she's not actually going anywhere.
She runs like she's underwater, or in a dream or something.
Either her run-animation needs to be slowed down, or she needs to travel further per step.