She seems surprise by the question, if only because at the moment Matilda is happier than she has been in as far as she can remember.

Jon was met with a smile and she gave him a firm nod. "Everything is great!" She could figure he seemed worried by her being alone--though she wasn't really. She had just wandered away from Tommy and Ana for a moment as she was prone to--even when she had lived with her family she often didn't ask permission to do things. It's not like they had noticed when she was gone.