"I am here," Meredith says, shaking her head at him, dumbfounded. "Sean, we've both made mistakes. A lot of them. And I'm here. I'm not going anywhere." She refuses to accept that as what it sounds like to her, not now, not when they're angry and upset and he's been drinking. If he says he can't do this tomorrow, she'll deal with it then, but right now, she has to get around the hard, painful lump in her chest her heart's become.