"I don't know," Murphy asked, yanking the door the rest of the way open. "Can you?" She grimaced as she realized how belligerent that sounded, and backpedaled. "I don't mean to be a bitch, it's just that I've had one to many nasties wearing a friend's face try to get themselves invited in."
If Dinah was Dinah, crossing the threshold wouldn't be an issue. Besides, she had as much right to be here as Murphy. Maybe more. So Murphy waited, expectantly, for Dinah to get over whatever quandary was keeping her outside.