They're not friends? Funny, she thinks. The poor mage is trapped between a rock and a pointy place, with only his translucent shield for protection.

"Leave? Under what authority?" she teases, for no authority would manage to convince her anyway. "I have a lot of time to wait until you run out of power, and I know you will eventually. How about we make a deal? Hand him over and I'll let you live."

There's a note of urgency, of real anger beneath her tone. She almost had Pratt - maybe still almost does. But without much of her innate power left after hunting others today, she's unwilling to spend more energy on this than she needs, so rather than attack again, she holds firm. Who knows, maybe the man with his barrier is selfish enough to give in. She might even consider honoring her offer to let him run. Give him a head start, at the very least.