Darcy can't help it, grinning from ear to ear in a sudden emotional switch around as she launches herself at him - arms wrapping around him in a brief hug. "Thank you, thank you, thank you I promise to call you first next time and not him I swear it I will be the best agent you've ever had."

Well, she'll try at least. Darcy isn't anyone's model for best SHIELD agent and probably will never be. It's just a side effect of being Darcy Lewis than anything conscious on her part.