As Sharon took a run to t he SUV Widow would be running right along with her, firing her guns at some of the Sentinels, giving Sharon enough cover to get to the SUV.
Natasha nods to Laura to give acknowledgment of her aiding with protecting the Director.
"Uh, Sharon. I hate to be a Debbie Downer, but it looks like we have bigger problems," Widow noticed that these Sentinels were going about different means of attacking. Scott would be the one to take notice of it, giving them all warning. Before anything else could be said and done, the green haired chick would come to protect them it seems.