Further inner lip biting (a pacifying gesture biting back words), then folding lips tightly in on themselves, shows "my lips are sealed".
This cluster of gestures suggests a high likelihood of deception.
A quick facial analysis shows a personality in conflict, an idealistic, fantasy-based take on the world, with a tendency to be easily swayed, alongside determined stubbornness.
It's easy to see how this type of personality could get caught up in such a dramatic adventure. Naively believing everything will turn out okay and experiencing surprise when it doesn't.