She's not sure why he's not attacking. Maybe he still has some hint of a mind, buried deep, and heard that she's not trying to kill him? Maybe she just actually got him to feel something in there. Regardless, she presses that as best she can - she treats it like facing an animal who knows you could threaten it, but she doesn't. Instead, she backs off a couple steps, but stands her ground, hammer and shield up. The wind stirs up another dust storm behind her, making the way look foreboding - and neatly blocking most of the cameras, not that she realizes it, while the Hulk himself just gets a nice warm breeze which blows off into the desert - a clear message, through her lies a fight, and adversity, but he could turn, take the path of least resistance, and she'll let him be...
after all, she remembers a few, rare talks with Dr. Banner, and something about the Hulk's real desire, deep down, was to be left alone.
"I can't let you kill all those people. But I don'twant to fight if you don't make me. Just... turn, start walking." she urges as gently as she can.