An oddly sweet yet chilling rendition of Stephen and Sweetness. She is certainly hovering and protective, but she also looks like the looming shadow of death as Stephen gets a little too close to his gun. He doesn't look despondent at all, just innocent and trusting and completely ignorant of any potential harm to himself from their relationship :/
That, or he's saying a quick blessing over the gun before aiming it (and her) at whoever she's glaring at.