Freya sat down as she was instructed, and placed her bag on the floor next to her, keeping her hands on her lap. "My name is Freya Skyler, Headmistress, I was advised to come and see you about something by another professor, who told me you may know more about patronuses." She watched the Heamistress before continuing. "I recently conjured a patronus in the Room of Requirements and it morphed from one form to another. At first it was a large crocodile, then it changed into a wolf, before disappearing. On my second attempt it only took the form of a crocodile. I was wondering if you could tell me why it might do such a thing?" Freya waited patiently for a response, she'd left out her more personal suspicions.