It seems to be a common pastime of werewolves, to give Ace a good shake now and then. Of course, she does need it sometimes.

She blinks at him, still a tad on the blank side, then at the stairwell. When she's back to blinking at Wells, her eyes are overbright.
"He's... he's hurt, an'... an'... things are missin' an'... an' there's a... thing..." She gestures, uselessly, because nothing can ever come close to describing a dead xenomorph head.