That's new is a mild way to put it. Shura is equally as dumbfounded as Bell slips out of her grip and launches herself at the orc's throat, watching in an adrenaline-fueled slow motion as the hare tears into the orc's throat. It might not be the strangest thing she's ever seen in her life, but it's going to probably be on the list. She hadn't done that before, what was going on now??

"The hell is going on with her?"

Shura has the advantage of knowing how to react in spite of whatever shock she might be experiencing, and so when Strange starts his spell, Shura moves in to defend him while the squishy wizard is vunerable, leaving the first orc to Bell and Strange and charging in on the one that's deciding to move in on Strange while his back is to him. It isn't hard to read the fear behind Strange's blustering; she just had to make sure he could get his job done. This isn't the time for looking good, this is the time to ensure that there are no witnesses.