If the dream itself hasn't already put the TARDIS off of physical expressions of affection, the unnecessary display of violence definitely does, and she takes a step back from Gabriel's touch, not caring that she's nearly treading on Peter's feet in the process. His behavior just now was honestly disgraceful, but she prefers not to linger on the way he'd clearly enjoyed killing the thing. There's already enough other things making her uncomfortable here.

Instead of returning his greeting, she looks up at him sternly. "If you're quite done, could we all just leave? I hate this place." She doesn't really mean to be this abrasive, but she is terribly on edge and she'd hoped Gabriel would help, rather than make it worse.