She was furious
She was furious with Steven for putting her in this situation, even though she was the one who decided to secretly follow him. In her defense, if he had not been acting so strangely and keeping secrets from her, she would never have even thought about following him in the first place.
But she did, and now they were stuck here. Was she ever going to get home safely? Her mind filled with questions and she had to do her best not to start crying.