All logical thought seemed to vanish from her when he told her to go. She couldn't, not only for his sake. But for hers. Leaving him, it wasn't an option. If she had to go along with whatever it was he wanted then she'd do that. She'd torch the car herself if it meant that she could stay by his side. She'd hurt him badly enough that she'd do anything to make him not feel like that again. Maybe this was just...stress. Maybe tomorrow he'd be fine.
"No, Sam please, just let me stay. I'll do better okay. I'll do whatever it takes. You have to take me with you"
She could hear herself, hear the desperation in her voice. She'd do anything for Sam Winchester and he knew it. He knew it completely.
"I can entertain you. I'm sure there's a way". He had to give her another chance. He just had to, if she left him now, in this state who knew what either of them might do. She offered him a sip of her daquiri. A lighter shade than her dress of course, and yet stayed a respectful distance for now, she just wanted him to take her in his arms and tell her she had another chance. That would do for now. The rest could follow if only he would hold her now.