The Beast again. There was something familiar about that name when he first heard it, but now that he has more of his memories back, he's able to pinpoint exactly where he's heard it. So Strange just grins, a purely shithead 'I know something you don't know' sort of grin.

"I wouldn't take her words too seriously. The Beast is just as confused as we are with regards to all of this--and that's before you take her reading into account."

The word 'this' is accompanied by a vague hand gesture. If Strange remembered the Beast aka the Ringmaster from the carnival, then the likelihood that she's experiencing memory nonsense as well is preeetty high. After all, that damn carnival's the running thread in all of this.