She startles away from him because she's so relieved he's human again, and not at all because they are such awkward teenage kids and what is this hugging thing--come on, she's hugged him plenty of times before!

Okay.

So she's a little awkward about it, anyway.

But she's also incredibly happy that he's not permanently a sheep, even if he was adorable.

"Sora! You're you again! Are you okay?!" Because he was just on a wild ride. She glances away nervously (definitely not "sheepishly"). "I guess I don't still have the keyblade."

Ha ha.

Awkward.