smooth one's (or smb.'s) ruffled (or rumpled) feathers

   пpивoдить ceбя (или кoгo-л.) в пopядoк; пpийти в ceбя, уcпoкoитьcя (уcпoкoить кoгo-л.)

    The politician having clearly been very annoyed by the rudeness of the question smoothed his rumpled feathers and gave a very sensible reply. 'If that's the way you feel about it,' she said, 'perhaps I had better not call so often.' 'Oh, my dear,' Sally put down her sewing intending to smooth down Laura's ruffled feathers, but Laura flounced out of the room (K. S. Prichard)