"Not much," he'll admit, with a frown. "Her and the Prince were having a conversation about something. The conversation grew tense, the Ringmaster grew annoyed, and eventually she turned into a dragon and left."

Left to probably sulk about it, but Strange is leaving that added bit of commentary to himself. He's relaying the information in a matter-of-fact tone of voice, looking over at Joker as he does so. Strange doesn't look all that pleased himself, he's got a feeling the stage manager is just as annoyed and just as worried.