Solas does not laugh, but the huff of his breath is it's own expression of appreciation. Yes, alright, their difference in age was occasionally a fertile ground for humor. That she felt so comfortable as to joke about it felt... better. More than anything, he wished not to become a tyrant to her, only because he was the older, and more powerful.

He knew well what that felt like.

"When I am with you, I am truly young... In spite of myself," He teases, slowly relaxing; there is no rational need to clutch, after all, "And you have ever seemed to be wise beyond your years. Perhaps we meet in the middle."