She said these things again and again--little Mary listened with tears in her eyes, and Chester would turn away his head or look upon her with a mournful smile.
The countess returned his gaze with a mournful smile.
She gave him hers with a mournful smile, and her eyes sought the ground.
Isabella viewed these projects with a mournful smile.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "mournful smile" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.