Shoot her.

The shrieking broad runs towards you on bare feet, lifting her weapon as she comes. It's an easy task to lift your own pistol and drop her with a single shot. "Couldn'ta been smoother, huh?" you say as the car pulls away. "Why the hell would you leave a witness?" "She ain't a witness, you son of a bitch," Tommy replies, "that was my old lady. She seen me come out an' thought I was cheating." He seems strangely calm as he says this, but a glance over reveals a tear rolling down his cheek and a gun in his hand. It's already pointed at your ribs. "Keep driving," he says, "and take a left before the bridge."