"But I know nothing about you at all," Sam said. "Aside from what little you've told me and what I've seen of you here on the ship. Unless you're a version of someone I've already met, but you won't confirm that for me either. I'm not asking about Cas. I'm asking about you."
Her voice was getting tight with frustration, because this was getting ridiculous. Clearly there was some reason why Meg and the Cas from her world were all-- closed off from her, closing ranks, keeping information, and she was way out of her depth. The last she remembered of her own Castiel, the angel had given her life to get Deanna the five minutes she needed to get through to Sam, and then apparently had dragged her out of the pit as best she could-- what had happened to that camaraderie, that teamwork? At least with the human-Castiel, he'd explained everything that had happened in his world, so she had a general idea.
And she was thoroughly exasperated, at the end of her rope with dealing with all these world differences, so even though she'd planned to simply walk away, she continued. "Are we going to even try to be friendly over having Cas in common, or not? Because despite the way you're acting right now, that is enough for me to be going on with. I'm just trying to find a way to navigate the differences between our worlds so we can all relate to one another; you're the one that's shutting me down."
But the mention of fries reminded her of Ruby (what was it with demons and fries, anyway?) and she got to her feet to walk away, ostensibly to put the alcohol back where it had come from, but mostly to just calm herself down. She was getting worked up, and that really wasn't necessary. Or pleasant.