He gave her his best grin when she glared at him. "I'm always nice, X." He gave his best innocent tone. Which probably didn't fool anyone who knew him. When she placed his hand on top of her head he complied with her unspoken request, sliding his hand over the top of her head, gentler now, repeating the motion. He really didn't mind, if it got her to relax a bit.
He leaned his head down to speak quietly to her when he heard her yawn, so no one else but she would hear it, his hand still moving over her hair. "It's okay to take five. I won't tell a soul, and I promise to wake you if anything happens."